summaryrefslogtreecommitdiff
path: root/arch/ppc/cpu/mpc5xx
diff options
context:
space:
mode:
Diffstat (limited to 'arch/ppc/cpu/mpc5xx')
-rw-r--r--arch/ppc/cpu/mpc5xx/Makefile59
-rw-r--r--arch/ppc/cpu/mpc5xx/config.mk36
-rw-r--r--arch/ppc/cpu/mpc5xx/cpu.c171
-rw-r--r--arch/ppc/cpu/mpc5xx/cpu_init.c123
-rw-r--r--arch/ppc/cpu/mpc5xx/interrupts.c207
-rw-r--r--arch/ppc/cpu/mpc5xx/serial.c170
-rw-r--r--arch/ppc/cpu/mpc5xx/speed.c67
-rw-r--r--arch/ppc/cpu/mpc5xx/spi.c412
-rw-r--r--arch/ppc/cpu/mpc5xx/start.S576
-rw-r--r--arch/ppc/cpu/mpc5xx/traps.c227
-rw-r--r--arch/ppc/cpu/mpc5xx/u-boot.lds137
11 files changed, 2185 insertions, 0 deletions
diff --git a/arch/ppc/cpu/mpc5xx/Makefile b/arch/ppc/cpu/mpc5xx/Makefile
new file mode 100644
index 0000000000..f2ebb9a123
--- /dev/null
+++ b/arch/ppc/cpu/mpc5xx/Makefile
@@ -0,0 +1,59 @@
+#
+# (C) Copyright 2006
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# (C) Copyright 2003
+# Martin Winistoerfer, martinwinistoerfer@gmx.ch.
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+
+#
+# File: arch/ppc/cpu/mpc5xx/Makefile
+#
+# Discription: Makefile to build mpc5xx cpu configuration.
+# Will include top config.mk which itselfs
+# uses the definitions made in arch/ppc/cpu/mpc5xx/config.mk
+#
+
+
+include $(TOPDIR)/config.mk
+
+LIB = $(obj)lib$(CPU).a
+
+START = start.o
+COBJS = serial.o cpu.o cpu_init.o interrupts.o traps.o speed.o spi.o
+
+SRCS := $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS := $(addprefix $(obj),$(SOBJS) $(COBJS))
+START := $(addprefix $(obj),$(START))
+
+all: $(obj).depend $(START) $(LIB)
+
+$(LIB): $(OBJS)
+ $(AR) $(ARFLAGS) $@ $(OBJS)
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/arch/ppc/cpu/mpc5xx/config.mk b/arch/ppc/cpu/mpc5xx/config.mk
new file mode 100644
index 0000000000..e0b0ce1fd5
--- /dev/null
+++ b/arch/ppc/cpu/mpc5xx/config.mk
@@ -0,0 +1,36 @@
+#
+# (C) Copyright 2003
+# Martin Winistoerfer, martinwinistoerfer@gmx.ch.
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+
+#
+# File: config.mk
+#
+# Discription: compiler flags and make definitions
+#
+
+
+PLATFORM_RELFLAGS += -fPIC -meabi
+
+PLATFORM_CPPFLAGS += -DCONFIG_5xx -ffixed-r2 -mpowerpc -msoft-float
+
+# Use default linker script. Board port can override in board/*/config.mk
+LDSCRIPT := $(SRCTREE)/arch/ppc/cpu/mpc5xx/u-boot.lds
diff --git a/arch/ppc/cpu/mpc5xx/cpu.c b/arch/ppc/cpu/mpc5xx/cpu.c
new file mode 100644
index 0000000000..7fffebcc1e
--- /dev/null
+++ b/arch/ppc/cpu/mpc5xx/cpu.c
@@ -0,0 +1,171 @@
+/*
+ * (C) Copyright 2003
+ * Martin Winistoerfer, martinwinistoerfer@gmx.ch.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation,
+ */
+
+/*
+ * File: cpu.c
+ *
+ * Discription: Some cpu specific function for watchdog,
+ * cpu version test, clock setting ...
+ *
+ */
+
+
+#include <common.h>
+#include <watchdog.h>
+#include <command.h>
+#include <mpc5xx.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#if (defined(CONFIG_MPC555))
+# define ID_STR "MPC555/556"
+
+/*
+ * Check version of cpu with Processor Version Register (PVR)
+ */
+static int check_cpu_version (long clock, uint pvr, uint immr)
+{
+ char buf[32];
+ /* The highest 16 bits should be 0x0002 for a MPC555/556 */
+ if ((pvr >> 16) == 0x0002) {
+ printf (" " ID_STR " Version %x", (pvr >> 16));
+ printf (" at %s MHz:", strmhz (buf, clock));
+ } else {
+ printf ("Not supported cpu version");
+ return -1;
+ }
+ return 0;
+}
+#endif /* CONFIG_MPC555 */
+
+
+/*
+ * Check version of mpc5xx
+ */
+int checkcpu (void)
+{
+ ulong clock = gd->cpu_clk;
+ uint immr = get_immr (0); /* Return full IMMR contents */
+ uint pvr = get_pvr (); /* Retrieve PVR register */
+
+ puts ("CPU: ");
+
+ return check_cpu_version (clock, pvr, immr);
+}
+
+/*
+ * Called by macro WATCHDOG_RESET
+ */
+#if defined(CONFIG_WATCHDOG)
+void watchdog_reset (void)
+{
+ int re_enable = disable_interrupts ();
+
+ reset_5xx_watchdog ((immap_t *) CONFIG_SYS_IMMR);
+ if (re_enable)
+ enable_interrupts ();
+}
+
+/*
+ * Will clear software reset
+ */
+void reset_5xx_watchdog (volatile immap_t * immr)
+{
+ /* Use the MPC5xx Internal Watchdog */
+ immr->im_siu_conf.sc_swsr = 0x556c; /* Prevent SW time-out */
+ immr->im_siu_conf.sc_swsr = 0xaa39;
+}
+
+#endif /* CONFIG_WATCHDOG */
+
+
+/*
+ * Get timebase clock frequency
+ */
+unsigned long get_tbclk (void)
+{
+ volatile immap_t *immr = (volatile immap_t *) CONFIG_SYS_IMMR;
+ ulong oscclk, factor;
+
+ if (immr->im_clkrst.car_sccr & SCCR_TBS) {
+ return (gd->cpu_clk / 16);
+ }
+
+ factor = (((CONFIG_SYS_PLPRCR) & PLPRCR_MF_MSK) >> PLPRCR_MF_SHIFT) + 1;
+
+ oscclk = gd->cpu_clk / factor;
+
+ if ((immr->im_clkrst.car_sccr & SCCR_RTSEL) == 0 || factor > 2) {
+ return (oscclk / 4);
+ }
+ return (oscclk / 16);
+}
+
+void dcache_enable (void)
+{
+ return;
+}
+
+void dcache_disable (void)
+{
+ return;
+}
+
+int dcache_status (void)
+{
+ return 0; /* always off */
+}
+
+/*
+ * Reset board
+ */
+int do_reset (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
+{
+#if defined(CONFIG_PATI)
+ volatile ulong *addr = (ulong *) CONFIG_SYS_RESET_ADDRESS;
+ *addr = 1;
+#else
+ ulong addr;
+
+ /* Interrupts off, enable reset */
+ __asm__ volatile (" mtspr 81, %r0 \n\t"
+ " mfmsr %r3 \n\t"
+ " rlwinm %r31,%r3,0,25,23\n\t"
+ " mtmsr %r31 \n\t");
+ /*
+ * Trying to execute the next instruction at a non-existing address
+ * should cause a machine check, resulting in reset
+ */
+#ifdef CONFIG_SYS_RESET_ADDRESS
+ addr = CONFIG_SYS_RESET_ADDRESS;
+#else
+ /*
+ * note: when CONFIG_SYS_MONITOR_BASE points to a RAM address, CONFIG_SYS_MONITOR_BASE * - sizeof (ulong) is usually a valid address. Better pick an address
+ * known to be invalid on your system and assign it to CONFIG_SYS_RESET_ADDRESS.
+ * "(ulong)-1" used to be a good choice for many systems...
+ */
+ addr = CONFIG_SYS_MONITOR_BASE - sizeof (ulong);
+#endif
+ ((void (*) (void)) addr) ();
+#endif /* #if defined(CONFIG_PATI) */
+ return 1;
+}
diff --git a/arch/ppc/cpu/mpc5xx/cpu_init.c b/arch/ppc/cpu/mpc5xx/cpu_init.c
new file mode 100644
index 0000000000..cb4bf84737
--- /dev/null
+++ b/arch/ppc/cpu/mpc5xx/cpu_init.c
@@ -0,0 +1,123 @@
+/*
+ * (C) Copyright 2003 Martin Winistoerfer, martinwinistoerfer@gmx.ch.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation,
+ */
+
+/*
+ * File: cpu_init.c
+ *
+ * Discription: Contains initialisation functions to setup
+ * the cpu properly
+ *
+ */
+
+#include <common.h>
+#include <mpc5xx.h>
+#include <watchdog.h>
+
+/*
+ * Setup essential cpu registers to run
+ */
+void cpu_init_f (volatile immap_t * immr)
+{
+ volatile memctl5xx_t *memctl = &immr->im_memctl;
+ ulong reg;
+
+ /* SYPCR - contains watchdog control. This will enable watchdog */
+ /* if CONFIG_WATCHDOG is set */
+ immr->im_siu_conf.sc_sypcr = CONFIG_SYS_SYPCR;
+
+#if defined(CONFIG_WATCHDOG)
+ reset_5xx_watchdog (immr);
+#endif
+
+ /* SIUMCR - contains debug pin configuration */
+ immr->im_siu_conf.sc_siumcr |= CONFIG_SYS_SIUMCR;
+
+ /* Initialize timebase. Unlock TBSCRK */
+ immr->im_sitk.sitk_tbscrk = KAPWR_KEY;
+ immr->im_sit.sit_tbscr = CONFIG_SYS_TBSCR;
+
+ /* Full IMB bus speed */
+ immr->im_uimb.uimb_umcr = CONFIG_SYS_UMCR;
+
+ /* Time base and decrementer will be enables (TBE) */
+ /* in init_timebase() in time.c called from board_init_f(). */
+
+ /* Initialize the PIT. Unlock PISCRK */
+ immr->im_sitk.sitk_piscrk = KAPWR_KEY;
+ immr->im_sit.sit_piscr = CONFIG_SYS_PISCR;
+
+#if !defined(CONFIG_PATI)
+ /* PATI sest PLL in start.S */
+ /* PLL (CPU clock) settings */
+ immr->im_clkrstk.cark_plprcrk = KAPWR_KEY;
+
+ /* If CONFIG_SYS_PLPRCR (set in the various *_config.h files) tries to
+ * set the MF field, then just copy CONFIG_SYS_PLPRCR over car_plprcr,
+ * otherwise OR in CONFIG_SYS_PLPRCR so we do not change the currentMF
+ * field value.
+ */
+#if ((CONFIG_SYS_PLPRCR & PLPRCR_MF_MSK) != 0)
+ reg = CONFIG_SYS_PLPRCR; /* reset control bits */
+#else
+ reg = immr->im_clkrst.car_plprcr;
+ reg &= PLPRCR_MF_MSK; /* isolate MF field */
+ reg |= CONFIG_SYS_PLPRCR; /* reset control bits */
+#endif
+ immr->im_clkrst.car_plprcr = reg;
+
+#endif /* !defined(CONFIG_PATI) */
+
+ /* System integration timers. CONFIG_SYS_MASK has EBDF configuration */
+ immr->im_clkrstk.cark_sccrk = KAPWR_KEY;
+ reg = immr->im_clkrst.car_sccr;
+ reg &= SCCR_MASK;
+ reg |= CONFIG_SYS_SCCR;
+ immr->im_clkrst.car_sccr = reg;
+
+ /* Memory Controller */
+ memctl->memc_br0 = CONFIG_SYS_BR0_PRELIM;
+ memctl->memc_or0 = CONFIG_SYS_OR0_PRELIM;
+
+#if (defined(CONFIG_SYS_OR1_PRELIM) && defined(CONFIG_SYS_BR1_PRELIM))
+ memctl->memc_or1 = CONFIG_SYS_OR1_PRELIM;
+ memctl->memc_br1 = CONFIG_SYS_BR1_PRELIM;
+#endif
+
+#if defined(CONFIG_SYS_OR2_PRELIM) && defined(CONFIG_SYS_BR2_PRELIM)
+ memctl->memc_or2 = CONFIG_SYS_OR2_PRELIM;
+ memctl->memc_br2 = CONFIG_SYS_BR2_PRELIM;
+#endif
+
+#if defined(CONFIG_SYS_OR3_PRELIM) && defined(CONFIG_SYS_BR3_PRELIM)
+ memctl->memc_or3 = CONFIG_SYS_OR3_PRELIM;
+ memctl->memc_br3 = CONFIG_SYS_BR3_PRELIM;
+#endif
+
+}
+
+/*
+ * Initialize higher level parts of cpu
+ */
+int cpu_init_r (void)
+{
+ /* Nothing to do at the moment */
+ return (0);
+}
diff --git a/arch/ppc/cpu/mpc5xx/interrupts.c b/arch/ppc/cpu/mpc5xx/interrupts.c
new file mode 100644
index 0000000000..167543fcf5
--- /dev/null
+++ b/arch/ppc/cpu/mpc5xx/interrupts.c
@@ -0,0 +1,207 @@
+/*
+ * (C) Copyright 2000-2002 Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ * (C) Copyright 2003 Martin Winistoerfer, martinwinistoerfer@gmx.ch.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation,
+ */
+
+/*
+ * File: interrupt.c
+ *
+ * Discription: Contains interrupt routines needed by U-Boot
+ *
+ */
+
+#include <common.h>
+#include <command.h>
+#include <mpc5xx.h>
+#include <asm/processor.h>
+
+#if defined(CONFIG_PATI)
+/* PATI uses IRQs for PCI doorbell */
+#undef NR_IRQS
+#define NR_IRQS 16
+#endif
+
+struct interrupt_action {
+ interrupt_handler_t *handler;
+ void *arg;
+ int count;
+};
+
+static struct interrupt_action irq_vecs[NR_IRQS];
+
+/*
+ * Initialise interrupts
+ */
+
+int interrupt_init_cpu (ulong *decrementer_count)
+{
+ volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
+ int vec;
+
+ /* Decrementer used here for status led */
+ *decrementer_count = get_tbclk () / CONFIG_SYS_HZ;
+
+ /* Disable all interrupts */
+ immr->im_siu_conf.sc_simask = 0;
+ for (vec=0; vec<NR_IRQS; vec++) {
+ irq_vecs[vec].handler = NULL;
+ irq_vecs[vec].arg = NULL;
+ irq_vecs[vec].count = 0;
+ }
+
+ return (0);
+}
+
+/*
+ * Handle external interrupts
+ */
+void external_interrupt (struct pt_regs *regs)
+{
+ volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
+ int irq;
+ ulong simask, newmask;
+ ulong vec, v_bit;
+
+ /*
+ * read the SIVEC register and shift the bits down
+ * to get the irq number
+ */
+ vec = immr->im_siu_conf.sc_sivec;
+ irq = vec >> 26;
+ v_bit = 0x80000000UL >> irq;
+
+ /*
+ * Read Interrupt Mask Register and Mask Interrupts
+ */
+ simask = immr->im_siu_conf.sc_simask;
+ newmask = simask & (~(0xFFFF0000 >> irq));
+ immr->im_siu_conf.sc_simask = newmask;
+
+ if (!(irq & 0x1)) { /* External Interrupt ? */
+ ulong siel;
+
+ /*
+ * Read Interrupt Edge/Level Register
+ */
+ siel = immr->im_siu_conf.sc_siel;
+
+ if (siel & v_bit) { /* edge triggered interrupt ? */
+ /*
+ * Rewrite SIPEND Register to clear interrupt
+ */
+ immr->im_siu_conf.sc_sipend = v_bit;
+ }
+ }
+
+ if (irq_vecs[irq].handler != NULL) {
+ irq_vecs[irq].handler (irq_vecs[irq].arg);
+ } else {
+ printf ("\nBogus External Interrupt IRQ %d Vector %ld\n",
+ irq, vec);
+ /* turn off the bogus interrupt to avoid it from now */
+ simask &= ~v_bit;
+ }
+ /*
+ * Re-Enable old Interrupt Mask
+ */
+ immr->im_siu_conf.sc_simask = simask;
+}
+
+/*
+ * Install and free an interrupt handler
+ */
+void irq_install_handler (int vec, interrupt_handler_t * handler,
+ void *arg)
+{
+ volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
+ /* SIU interrupt */
+ if (irq_vecs[vec].handler != NULL) {
+ printf ("SIU interrupt %d 0x%x\n",
+ vec,
+ (uint) handler);
+ }
+ irq_vecs[vec].handler = handler;
+ irq_vecs[vec].arg = arg;
+ immr->im_siu_conf.sc_simask |= 1 << (31 - vec);
+#if 0
+ printf ("Install SIU interrupt for vector %d ==> %p\n",
+ vec, handler);
+#endif
+}
+
+void irq_free_handler (int vec)
+{
+ volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
+ /* SIU interrupt */
+#if 0
+ printf ("Free CPM interrupt for vector %d\n",
+ vec);
+#endif
+ immr->im_siu_conf.sc_simask &= ~(1 << (31 - vec));
+ irq_vecs[vec].handler = NULL;
+ irq_vecs[vec].arg = NULL;
+}
+
+/*
+ * Timer interrupt - gets called when bit 0 of DEC changes from
+ * 0. Decrementer is enabled with bit TBE in TBSCR.
+ */
+void timer_interrupt_cpu (struct pt_regs *regs)
+{
+ volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
+
+#if 0
+ printf ("*** Timer Interrupt *** ");
+#endif
+ /* Reset Timer Status Bit and Timers Interrupt Status */
+ immr->im_clkrstk.cark_plprcrk = KAPWR_KEY;
+ __asm__ ("nop");
+ immr->im_clkrst.car_plprcr |= PLPRCR_TEXPS | PLPRCR_TMIST;
+
+ return;
+}
+
+#if defined(CONFIG_CMD_IRQ)
+/*******************************************************************************
+ *
+ * irqinfo - print information about IRQs
+ *
+ */
+int do_irqinfo(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ int vec;
+
+ printf ("\nInterrupt-Information:\n");
+ printf ("Nr Routine Arg Count\n");
+
+ for (vec=0; vec<NR_IRQS; vec++) {
+ if (irq_vecs[vec].handler != NULL) {
+ printf ("%02d %08lx %08lx %d\n",
+ vec,
+ (ulong)irq_vecs[vec].handler,
+ (ulong)irq_vecs[vec].arg,
+ irq_vecs[vec].count);
+ }
+ }
+ return 0;
+}
+
+
+#endif
diff --git a/arch/ppc/cpu/mpc5xx/serial.c b/arch/ppc/cpu/mpc5xx/serial.c
new file mode 100644
index 0000000000..88c6db81cb
--- /dev/null
+++ b/arch/ppc/cpu/mpc5xx/serial.c
@@ -0,0 +1,170 @@
+/*
+ * (C) Copyright 2003
+ * Martin Winistoerfer, martinwinistoerfer@gmx.ch.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation,
+ */
+
+/*
+ * File: serial.c
+ *
+ * Discription: Serial interface driver for SCI1 and SCI2.
+ * Since this code will be called from ROM use
+ * only non-static local variables.
+ *
+ */
+
+#include <common.h>
+#include <watchdog.h>
+#include <command.h>
+#include <mpc5xx.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/*
+ * Local function prototypes
+ */
+
+static int ready_to_send(void);
+
+/*
+ * Minimal global serial functions needed to use one of the SCI modules.
+ */
+
+int serial_init (void)
+{
+ volatile immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
+
+ serial_setbrg();
+
+#if defined(CONFIG_5xx_CONS_SCI1)
+ /* 10-Bit, 1 start bit, 8 data bit, no parity, 1 stop bit */
+ immr->im_qsmcm.qsmcm_scc1r1 = SCI_M_10;
+ immr->im_qsmcm.qsmcm_scc1r1 = SCI_TE | SCI_RE;
+#else
+ immr->im_qsmcm.qsmcm_scc2r1 = SCI_M_10;
+ immr->im_qsmcm.qsmcm_scc2r1 = SCI_TE | SCI_RE;
+#endif
+ return 0;
+}
+
+void serial_putc(const char c)
+{
+ volatile immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
+
+ /* Test for completition */
+ if(ready_to_send()) {
+#if defined(CONFIG_5xx_CONS_SCI1)
+ immr->im_qsmcm.qsmcm_sc1dr = (short)c;
+#else
+ immr->im_qsmcm.qsmcm_sc2dr = (short)c;
+#endif
+ if(c == '\n') {
+ if(ready_to_send());
+#if defined(CONFIG_5xx_CONS_SCI1)
+ immr->im_qsmcm.qsmcm_sc1dr = (short)'\r';
+#else
+ immr->im_qsmcm.qsmcm_sc2dr = (short)'\r';
+#endif
+ }
+ }
+}
+
+int serial_getc(void)
+{
+ volatile immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
+ volatile short status;
+ unsigned char tmp;
+
+ /* New data ? */
+ do {
+#if defined(CONFIG_5xx_CONS_SCI1)
+ status = immr->im_qsmcm.qsmcm_sc1sr;
+#else
+ status = immr->im_qsmcm.qsmcm_sc2sr;
+#endif
+
+#if defined(CONFIG_WATCHDOG)
+ reset_5xx_watchdog (immr);
+#endif
+ } while ((status & SCI_RDRF) == 0);
+
+ /* Read data */
+#if defined(CONFIG_5xx_CONS_SCI1)
+ tmp = (unsigned char)(immr->im_qsmcm.qsmcm_sc1dr & SCI_SCXDR_MK);
+#else
+ tmp = (unsigned char)( immr->im_qsmcm.qsmcm_sc2dr & SCI_SCXDR_MK);
+#endif
+ return tmp;
+}
+
+int serial_tstc()
+{
+ volatile immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
+ short status;
+
+ /* New data character ? */
+#if defined(CONFIG_5xx_CONS_SCI1)
+ status = immr->im_qsmcm.qsmcm_sc1sr;
+#else
+ status = immr->im_qsmcm.qsmcm_sc2sr;
+#endif
+ return (status & SCI_RDRF);
+}
+
+void serial_setbrg (void)
+{
+ volatile immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
+ short scxbr;
+
+ /* Set baudrate */
+ scxbr = (gd->cpu_clk / (32 * gd->baudrate));
+#if defined(CONFIG_5xx_CONS_SCI1)
+ immr->im_qsmcm.qsmcm_scc1r0 = (scxbr & SCI_SCXBR_MK);
+#else
+ immr->im_qsmcm.qsmcm_scc2r0 = (scxbr & SCI_SCXBR_MK);
+#endif
+}
+
+void serial_puts (const char *s)
+{
+ while (*s) {
+ serial_putc(*s);
+ ++s;
+ }
+}
+
+int ready_to_send(void)
+{
+ volatile immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
+ volatile short status;
+
+ do {
+#if defined(CONFIG_5xx_CONS_SCI1)
+ status = immr->im_qsmcm.qsmcm_sc1sr;
+#else
+ status = immr->im_qsmcm.qsmcm_sc2sr;
+#endif
+
+#if defined(CONFIG_WATCHDOG)
+ reset_5xx_watchdog (immr);
+#endif
+ } while ((status & SCI_TDRE) == 0);
+ return 1;
+
+}
diff --git a/arch/ppc/cpu/mpc5xx/speed.c b/arch/ppc/cpu/mpc5xx/speed.c
new file mode 100644
index 0000000000..ea5c1dead5
--- /dev/null
+++ b/arch/ppc/cpu/mpc5xx/speed.c
@@ -0,0 +1,67 @@
+/*
+ * (C) Copyright 2003
+ * Martin Winistoerfer, martinwinistoerfer@gmx.ch.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation,
+ */
+
+/*
+ * File: speed.c
+ *
+ * Discription: Provides cpu speed calculation
+ *
+ */
+
+#include <common.h>
+#include <mpc5xx.h>
+#include <asm/processor.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/*
+ * Get cpu and bus clock
+ */
+int get_clocks (void)
+{
+ volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
+
+#ifndef CONFIG_5xx_GCLK_FREQ
+ uint divf = (immr->im_clkrst.car_plprcr & PLPRCR_DIVF_MSK);
+ uint mf = ((immr->im_clkrst.car_plprcr & PLPRCR_MF_MSK) >> PLPRCR_MF_SHIFT);
+ ulong vcoout;
+
+ vcoout = (CONFIG_SYS_OSC_CLK / (divf + 1)) * (mf + 1) * 2;
+ if(immr->im_clkrst.car_plprcr & PLPRCR_CSRC_MSK) {
+ gd->cpu_clk = vcoout / (2^(((immr->im_clkrst.car_sccr & SCCR_DFNL_MSK) >> SCCR_DFNL_SHIFT) + 1));
+ } else {
+ gd->cpu_clk = vcoout / (2^(immr->im_clkrst.car_sccr & SCCR_DFNH_MSK));
+ }
+
+#else /* CONFIG_5xx_GCLK_FREQ */
+ gd->bus_clk = CONFIG_5xx_GCLK_FREQ;
+#endif /* CONFIG_5xx_GCLK_FREQ */
+
+ if ((immr->im_clkrst.car_sccr & SCCR_EBDF11) == 0) {
+ /* No Bus Divider active */
+ gd->bus_clk = gd->cpu_clk;
+ } else {
+ /* CLKOUT is GCLK / 2 */
+ gd->bus_clk = gd->cpu_clk / 2;
+ }
+ return (0);
+}
diff --git a/arch/ppc/cpu/mpc5xx/spi.c b/arch/ppc/cpu/mpc5xx/spi.c
new file mode 100644
index 0000000000..3ca15ea838
--- /dev/null
+++ b/arch/ppc/cpu/mpc5xx/spi.c
@@ -0,0 +1,412 @@
+/*
+ * Copyright (c) 2001 Navin Boppuri / Prashant Patel
+ * <nboppuri@trinetcommunication.com>,
+ * <pmpatel@trinetcommunication.com>
+ * Copyright (c) 2001 Gerd Mennchen <Gerd.Mennchen@icn.siemens.de>
+ * Copyright (c) 2001 Wolfgang Denk, DENX Software Engineering, <wd@denx.de>.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/*
+ * MPC5xx CPM SPI interface.
+ *
+ * Parts of this code are probably not portable and/or specific to
+ * the board which I used for the tests. Please send fixes/complaints
+ * to wd@denx.de
+ *
+ * Ported to MPC5xx
+ * Copyright (c) 2003 Denis Peter, MPL AG Switzerland, d.petr@mpl.ch.
+ */
+
+#include <common.h>
+#include <mpc5xx.h>
+#include <asm/5xx_immap.h>
+#include <linux/ctype.h>
+#include <malloc.h>
+#include <post.h>
+#include <net.h>
+
+#if defined(CONFIG_SPI)
+
+#undef DEBUG
+
+#define SPI_EEPROM_WREN 0x06
+#define SPI_EEPROM_RDSR 0x05
+#define SPI_EEPROM_READ 0x03
+#define SPI_EEPROM_WRITE 0x02
+
+
+#ifdef DEBUG
+
+#define DPRINT(a) printf a;
+/* -----------------------------------------------
+ * Helper functions to peek into tx and rx buffers
+ * ----------------------------------------------- */
+static const char * const hex_digit = "0123456789ABCDEF";
+
+static char quickhex (int i)
+{
+ return hex_digit[i];
+}
+
+static void memdump (void *pv, int num)
+{
+ int i;
+ unsigned char *pc = (unsigned char *) pv;
+
+ for (i = 0; i < num; i++)
+ printf ("%c%c ", quickhex (pc[i] >> 4), quickhex (pc[i] & 0x0f));
+ printf ("\t");
+ for (i = 0; i < num; i++)
+ printf ("%c", isprint (pc[i]) ? pc[i] : '.');
+ printf ("\n");
+}
+#else /* !DEBUG */
+
+#define DPRINT(a)
+
+#endif /* DEBUG */
+
+/* -------------------
+ * Function prototypes
+ * ------------------- */
+void spi_init (void);
+
+ssize_t spi_read (uchar *, int, uchar *, int);
+ssize_t spi_write (uchar *, int, uchar *, int);
+ssize_t spi_xfer (size_t);
+
+
+/* **************************************************************************
+ *
+ * Function: spi_init_f
+ *
+ * Description: Init SPI-Controller (ROM part)
+ *
+ * return: ---
+ *
+ * *********************************************************************** */
+
+void spi_init_f (void)
+{
+ int i;
+
+ volatile immap_t *immr;
+ volatile qsmcm5xx_t *qsmcm;
+
+ immr = (immap_t *) CONFIG_SYS_IMMR;
+ qsmcm = (qsmcm5xx_t *)&immr->im_qsmcm;
+
+ qsmcm->qsmcm_qsmcr = 0; /* all accesses enabled */
+ qsmcm->qsmcm_qspi_il = 0; /* lowest IRQ */
+
+ /* --------------------------------------------
+ * GPIO or per. Function
+ * PQSPAR[00] = 0 reserved
+ * PQSPAR[01] = 1 [0x4000] -> PERI: (SPICS3)
+ * PQSPAR[02] = 0 [0x0000] -> GPIO
+ * PQSPAR[03] = 0 [0x0000] -> GPIO
+ * PQSPAR[04] = 1 [0x0800] -> PERI: (SPICS0)
+ * PQSPAR[05] = 0 reseved
+ * PQSPAR[06] = 1 [0x0200] -> PERI: (SPIMOSI)
+ * PQSPAR[07] = 1 [0x0100] -> PERI: (SPIMISO)
+ * -------------------------------------------- */
+ qsmcm->qsmcm_pqspar = 0x3 | (CONFIG_SYS_SPI_CS_USED << 3);
+
+ /* --------------------------------------------
+ * DDRQS[00] = 0 reserved
+ * DDRQS[01] = 1 [0x0040] -> SPICS3 Output
+ * DDRQS[02] = 0 [0x0000] -> GPIO Output
+ * DDRQS[03] = 0 [0x0000] -> GPIO Output
+ * DDRQS[04] = 1 [0x0008] -> SPICS0 Output
+ * DDRQS[05] = 1 [0x0004] -> SPICLK Output
+ * DDRQS[06] = 1 [0x0002] -> SPIMOSI Output
+ * DDRQS[07] = 0 [0x0001] -> SPIMISO Input
+ * -------------------------------------------- */
+ qsmcm->qsmcm_ddrqs = 0x7E;
+ /* --------------------------------------------
+ * Base state for used SPI CS pins, if base = 0 active must be 1
+ * PORTQS[00] = 0 reserved
+ * PORTQS[01] = 0 reserved
+ * PORTQS[02] = 0 reserved
+ * PORTQS[03] = 0 reserved
+ * PORTQS[04] = 0 [0x0000] RxD2
+ * PORTQS[05] = 1 [0x0400] TxD2
+ * PORTQS[06] = 0 [0x0000] RxD1
+ * PORTQS[07] = 1 [0x0100] TxD1
+ * PORTQS[08] = 0 reserved
+ * PORTQS[09] = 0 [0x0000] -> SPICS3 Base Output
+ * PORTQS[10] = 0 [0x0000] -> SPICS2 Base Output
+ * PORTQS[11] = 0 [0x0000] -> SPICS1 Base Output
+ * PORTQS[12] = 0 [0x0000] -> SPICS0 Base Output
+ * PORTQS[13] = 0 [0x0004] -> SPICLK Output
+ * PORTQS[14] = 0 [0x0002] -> SPIMOSI Output
+ * PORTQS[15] = 0 [0x0001] -> SPIMISO Input
+ * -------------------------------------------- */
+ qsmcm->qsmcm_portqs |= (CONFIG_SYS_SPI_CS_BASE << 3);
+ /* --------------------------------------------
+ * Controll Register 0
+ * SPCR0[00] = 1 (0x8000) Master
+ * SPCR0[01] = 0 (0x0000) Wired-Or
+ * SPCR0[2..5] = (0x2000) Bits per transfer (default 8)
+ * SPCR0[06] = 0 (0x0000) Normal polarity
+ * SPCR0[07] = 0 (0x0000) Normal Clock Phase
+ * SPCR0[08..15] = 14 1.4MHz
+ */
+ qsmcm->qsmcm_spcr0=0xA00E;
+ /* --------------------------------------------
+ * Controll Register 1
+ * SPCR1[00] = 0 (0x0000) QSPI enabled
+ * SPCR1[1..7] = (0x7F00) Delay before Transfer
+ * SPCR1[8..15] = (0x0000) Delay After transfer (204.8usec@40MHz)
+ */
+ qsmcm->qsmcm_spcr1=0x7F00;
+ /* --------------------------------------------
+ * Controll Register 2
+ * SPCR2[00] = 0 (0x0000) SPI IRQs Disabeld
+ * SPCR2[01] = 0 (0x0000) No Wrap around
+ * SPCR2[02] = 0 (0x0000) Wrap to 0
+ * SPCR2[3..7] = (0x0000) End Queue pointer = 0
+ * SPCR2[8..10] = 0 (0x0000) reserved
+ * SPCR2[11..15] = 0 (0x0000) NewQueue Address = 0
+ */
+ qsmcm->qsmcm_spcr2=0x0000;
+ /* --------------------------------------------
+ * Controll Register 3
+ * SPCR3[00..04] = 0 (0x0000) reserved
+ * SPCR3[05] = 0 (0x0000) Feedback disabled
+ * SPCR3[06] = 0 (0x0000) IRQ on HALTA & MODF disabled
+ * SPCR3[07] = 0 (0x0000) Not halted
+ */
+ qsmcm->qsmcm_spcr3=0x00;
+ /* --------------------------------------------
+ * SPSR (Controll Register 3) Read only/ reset Flags 08,09,10
+ * SPCR3[08] = 1 (0x80) QSPI finished
+ * SPCR3[09] = 1 (0x40) Mode Fault Flag
+ * SPCR3[10] = 1 (0x20) HALTA
+ * SPCR3[11..15] = 0 (0x0000) Last executed command
+ */
+ qsmcm->qsmcm_spsr=0xE0;
+ /*-------------------------------------------
+ * Setup RAM
+ */
+ for(i=0;i<32;i++) {
+ qsmcm->qsmcm_recram[i]=0x0000;
+ qsmcm->qsmcm_tranram[i]=0x0000;
+ qsmcm->qsmcm_comdram[i]=0x00;
+ }
+ return;
+}
+
+/* **************************************************************************
+ *
+ * Function: spi_init_r
+ * Dummy, all initializations have been done in spi_init_r
+ * *********************************************************************** */
+void spi_init_r (void)
+{
+ return;
+
+}
+
+/****************************************************************************
+ * Function: spi_write
+ **************************************************************************** */
+ssize_t short_spi_write (uchar *addr, int alen, uchar *buffer, int len)
+{
+ int i,dlen;
+ volatile immap_t *immr;
+ volatile qsmcm5xx_t *qsmcm;
+
+ immr = (immap_t *) CONFIG_SYS_IMMR;
+ qsmcm = (qsmcm5xx_t *)&immr->im_qsmcm;
+ for(i=0;i<32;i++) {
+ qsmcm->qsmcm_recram[i]=0x0000;
+ qsmcm->qsmcm_tranram[i]=0x0000;
+ qsmcm->qsmcm_comdram[i]=0x00;
+ }
+ qsmcm->qsmcm_tranram[0] = SPI_EEPROM_WREN; /* write enable */
+ spi_xfer(1);
+ i=0;
+ qsmcm->qsmcm_tranram[i++] = SPI_EEPROM_WRITE; /* WRITE memory array */
+ qsmcm->qsmcm_tranram[i++] = addr[0];
+ qsmcm->qsmcm_tranram[i++] = addr[1];
+
+ for(dlen=0;dlen<len;dlen++) {
+ qsmcm->qsmcm_tranram[i+dlen] = buffer[dlen]; /* WRITE memory array */
+ }
+ /* transmit it */
+ spi_xfer(i+dlen);
+ /* ignore received data */
+ for (i = 0; i < 1000; i++) {
+ qsmcm->qsmcm_tranram[0] = SPI_EEPROM_RDSR; /* read status */
+ qsmcm->qsmcm_tranram[1] = 0;
+ spi_xfer(2);
+ if (!(qsmcm->qsmcm_recram[1] & 1)) {
+ break;
+ }
+ udelay(1000);
+ }
+ if (i >= 1000) {
+ printf ("*** spi_write: Time out while writing!\n");
+ }
+ return len;
+}
+
+#define TRANSFER_LEN 16
+
+ssize_t spi_write (uchar *addr, int alen, uchar *buffer, int len)
+{
+ int index,i,newlen;
+ uchar newaddr[2];
+ int curraddr;
+
+ curraddr=(addr[alen-2]<<8)+addr[alen-1];
+ i=len;
+ index=0;
+ do {
+ newaddr[1]=(curraddr & 0xff);
+ newaddr[0]=((curraddr>>8) & 0xff);
+ if(i>TRANSFER_LEN) {
+ newlen=TRANSFER_LEN;
+ i-=TRANSFER_LEN;
+ }
+ else {
+ newlen=i;
+ i=0;
+ }
+ short_spi_write (newaddr, 2, &buffer[index], newlen);
+ index+=newlen;
+ curraddr+=newlen;
+ }while(i);
+ return (len);
+}
+
+/****************************************************************************
+ * Function: spi_read
+ **************************************************************************** */
+ssize_t short_spi_read (uchar *addr, int alen, uchar *buffer, int len)
+{
+ int i;
+ volatile immap_t *immr;
+ volatile qsmcm5xx_t *qsmcm;
+
+ immr = (immap_t *) CONFIG_SYS_IMMR;
+ qsmcm = (qsmcm5xx_t *)&immr->im_qsmcm;
+
+ for(i=0;i<32;i++) {
+ qsmcm->qsmcm_recram[i]=0x0000;
+ qsmcm->qsmcm_tranram[i]=0x0000;
+ qsmcm->qsmcm_comdram[i]=0x00;
+ }
+ i=0;
+ qsmcm->qsmcm_tranram[i++] = (SPI_EEPROM_READ); /* READ memory array */
+ qsmcm->qsmcm_tranram[i++] = addr[0] & 0xff;
+ qsmcm->qsmcm_tranram[i++] = addr[1] & 0xff;
+ spi_xfer(3 + len);
+ for(i=0;i<len;i++) {
+ *buffer++=(char)qsmcm->qsmcm_recram[i+3];
+ }
+ return len;
+}
+
+ssize_t spi_read (uchar *addr, int alen, uchar *buffer, int len)
+{
+ int index,i,newlen;
+ uchar newaddr[2];
+ int curraddr;
+
+ curraddr=(addr[alen-2]<<8)+addr[alen-1];
+ i=len;
+ index=0;
+ do {
+ newaddr[1]=(curraddr & 0xff);
+ newaddr[0]=((curraddr>>8) & 0xff);
+ if(i>TRANSFER_LEN) {
+ newlen=TRANSFER_LEN;
+ i-=TRANSFER_LEN;
+ }
+ else {
+ newlen=i;
+ i=0;
+ }
+ short_spi_read (newaddr, 2, &buffer[index], newlen);
+ index+=newlen;
+ curraddr+=newlen;
+ }while(i);
+ return (len);
+}
+
+/****************************************************************************
+ * Function: spi_xfer
+ **************************************************************************** */
+ssize_t spi_xfer (size_t count)
+{
+ volatile immap_t *immr;
+ volatile qsmcm5xx_t *qsmcm;
+ int i;
+ int tm;
+ ushort status;
+ immr = (immap_t *) CONFIG_SYS_IMMR;
+ qsmcm = (qsmcm5xx_t *)&immr->im_qsmcm;
+ DPRINT (("*** spi_xfer entered count %d***\n",count));
+
+ /* Set CS for device */
+ for(i=0;i<(count-1);i++)
+ qsmcm->qsmcm_comdram[i] = 0x80 | CONFIG_SYS_SPI_CS_ACT; /* CS3 is connected to the SPI EEPROM */
+
+ qsmcm->qsmcm_comdram[i] = CONFIG_SYS_SPI_CS_ACT; /* CS3 is connected to the SPI EEPROM */
+ qsmcm->qsmcm_spcr2=((count-1)&0x1F)<<8;
+
+ DPRINT (("*** spi_xfer: Bytes to be xferred: %d ***\n", count));
+
+ qsmcm->qsmcm_spsr=0xE0; /* clear all flags */
+
+ /* start spi transfer */
+ DPRINT (("*** spi_xfer: Performing transfer ...\n"));
+ qsmcm->qsmcm_spcr1 |= 0x8000; /* Start transmit */
+
+ /* --------------------------------
+ * Wait for SPI transmit to get out
+ * or time out (1 second = 1000 ms)
+ * -------------------------------- */
+ for (tm=0; tm<1000; ++tm) {
+ status=qsmcm->qsmcm_spcr1;
+ if((status & 0x8000)==0)
+ break;
+ udelay (1000);
+ }
+ if (tm >= 1000) {
+ printf ("*** spi_xfer: Time out while xferring to/from SPI!\n");
+ }
+#ifdef DEBUG
+ printf ("\nspi_xfer: txbuf after xfer\n");
+ memdump ((void *) qsmcm->qsmcm_tranram, 32); /* dump of txbuf before transmit */
+ printf ("spi_xfer: rxbuf after xfer\n");
+ memdump ((void *) qsmcm->qsmcm_recram, 32); /* dump of rxbuf after transmit */
+ printf ("\nspi_xfer: commbuf after xfer\n");
+ memdump ((void *) qsmcm->qsmcm_comdram, 32); /* dump of txbuf before transmit */
+ printf ("\n");
+#endif
+
+ return count;
+}
+
+#endif /* CONFIG_SPI */
diff --git a/arch/ppc/cpu/mpc5xx/start.S b/arch/ppc/cpu/mpc5xx/start.S
new file mode 100644
index 0000000000..0af879e391
--- /dev/null
+++ b/arch/ppc/cpu/mpc5xx/start.S
@@ -0,0 +1,576 @@
+/*
+ * Copyright (C) 1998 Dan Malek <dmalek@jlc.net>
+ * Copyright (C) 1999 Magnus Damm <kieraypc01.p.y.kie.era.ericsson.se>
+ * Copyright (C) 2000, 2001, 2002 Wolfgang Denk <wd@denx.de>
+ * Copyright (C) 2003 Martin Winistoerfer, martinwinistoerfer@gmx.ch.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/*
+ * File: start.S
+ *
+ * Discription: startup code
+ *
+ */
+
+#include <config.h>
+#include <mpc5xx.h>
+#include <timestamp.h>
+#include <version.h>
+
+#define CONFIG_5xx 1 /* needed for Linux kernel header files */
+#define _LINUX_CONFIG_H 1 /* avoid reading Linux autoconf.h file */
+
+#include <ppc_asm.tmpl>
+#include <ppc_defs.h>
+
+#include <linux/config.h>
+#include <asm/processor.h>
+
+#ifndef CONFIG_IDENT_STRING
+#define CONFIG_IDENT_STRING ""
+#endif
+
+/* We don't have a MMU.
+*/
+#undef MSR_KERNEL
+#define MSR_KERNEL ( MSR_ME | MSR_RI ) /* Machine Check and Recoverable Interr. */
+
+/*
+ * Set up GOT: Global Offset Table
+ *
+ * Use r12 to access the GOT
+ */
+ START_GOT
+ GOT_ENTRY(_GOT2_TABLE_)
+ GOT_ENTRY(_FIXUP_TABLE_)
+
+ GOT_ENTRY(_start)
+ GOT_ENTRY(_start_of_vectors)
+ GOT_ENTRY(_end_of_vectors)
+ GOT_ENTRY(transfer_to_handler)
+
+ GOT_ENTRY(__init_end)
+ GOT_ENTRY(_end)
+ GOT_ENTRY(__bss_start)
+ END_GOT
+
+/*
+ * r3 - 1st arg to board_init(): IMMP pointer
+ * r4 - 2nd arg to board_init(): boot flag
+ */
+ .text
+ .long 0x27051956 /* U-Boot Magic Number */
+ .globl version_string
+version_string:
+ .ascii U_BOOT_VERSION
+ .ascii " (", U_BOOT_DATE, " - ", U_BOOT_TIME, ")"
+ .ascii CONFIG_IDENT_STRING, "\0"
+
+ . = EXC_OFF_SYS_RESET
+ .globl _start
+_start:
+ mfspr r3, 638
+ li r4, CONFIG_SYS_ISB /* Set ISB bit */
+ or r3, r3, r4
+ mtspr 638, r3
+ li r21, BOOTFLAG_COLD /* Normal Power-On: Boot from FLASH */
+ b boot_cold
+
+ . = EXC_OFF_SYS_RESET + 0x20
+
+ .globl _start_warm
+_start_warm:
+ li r21, BOOTFLAG_WARM /* Software reboot */
+ b boot_warm
+
+boot_cold:
+boot_warm:
+
+ /* Initialize machine status; enable machine check interrupt */
+ /*----------------------------------------------------------------------*/
+ li r3, MSR_KERNEL /* Set ME, RI flags */
+ mtmsr r3
+ mtspr SRR1, r3 /* Make SRR1 match MSR */
+
+ /* Initialize debug port registers */
+ /*----------------------------------------------------------------------*/
+ xor r0, r0, r0 /* Clear R0 */
+ mtspr LCTRL1, r0 /* Initialize debug port regs */
+ mtspr LCTRL2, r0
+ mtspr COUNTA, r0
+ mtspr COUNTB, r0
+
+#if defined(CONFIG_PATI)
+ /* the external flash access on PATI fails if programming the PLL to 40MHz.
+ * Copy the PLL programming code to the internal RAM and execute it
+ *----------------------------------------------------------------------*/
+ lis r3, CONFIG_SYS_MONITOR_BASE@h
+ ori r3, r3, CONFIG_SYS_MONITOR_BASE@l
+ addi r3, r3, pll_prog_code_start - _start + EXC_OFF_SYS_RESET
+
+ lis r4, CONFIG_SYS_INIT_RAM_ADDR@h
+ ori r4, r4, CONFIG_SYS_INIT_RAM_ADDR@l
+ mtlr r4
+ addis r5,0,0x0
+ ori r5,r5,((pll_prog_code_end - pll_prog_code_start) >>2)
+ mtctr r5
+ addi r3, r3, -4
+ addi r4, r4, -4
+0:
+ lwzu r0,4(r3)
+ stwu r0,4(r4)
+ bdnz 0b /* copy loop */
+ blrl
+#endif
+
+ /*
+ * Calculate absolute address in FLASH and jump there
+ *----------------------------------------------------------------------*/
+
+ lis r3, CONFIG_SYS_MONITOR_BASE@h
+ ori r3, r3, CONFIG_SYS_MONITOR_BASE@l
+ addi r3, r3, in_flash - _start + EXC_OFF_SYS_RESET
+ mtlr r3
+ blr
+
+in_flash:
+
+ /* Initialize some SPRs that are hard to access from C */
+ /*----------------------------------------------------------------------*/
+
+ lis r3, CONFIG_SYS_IMMR@h /* Pass IMMR as arg1 to C routine */
+ lis r2, CONFIG_SYS_INIT_SP_ADDR@h
+ ori r1, r2, CONFIG_SYS_INIT_SP_ADDR@l /* Set up the stack in internal SRAM */
+ /* Note: R0 is still 0 here */
+ stwu r0, -4(r1) /* Clear final stack frame so that */
+ stwu r0, -4(r1) /* stack backtraces terminate cleanly */
+
+ /*
+ * Disable serialized ifetch and show cycles
+ * (i.e. set processor to normal mode) for maximum
+ * performance.
+ */
+
+ li r2, 0x0007
+ mtspr ICTRL, r2
+
+ /* Set up debug mode entry */
+
+ lis r2, CONFIG_SYS_DER@h
+ ori r2, r2, CONFIG_SYS_DER@l
+ mtspr DER, r2
+
+ /* Let the C-code set up the rest */
+ /* */
+ /* Be careful to keep code relocatable ! */
+ /*----------------------------------------------------------------------*/
+
+ GET_GOT /* initialize GOT access */
+
+ /* r3: IMMR */
+ bl cpu_init_f /* run low-level CPU init code (from Flash) */
+
+ mr r3, r21
+ /* r3: BOOTFLAG */
+ bl board_init_f /* run 1st part of board init code (from Flash) */
+
+
+ .globl _start_of_vectors
+_start_of_vectors:
+
+/* Machine check */
+ STD_EXCEPTION(0x200, MachineCheck, MachineCheckException)
+
+/* Data Storage exception. "Never" generated on the 860. */
+ STD_EXCEPTION(0x300, DataStorage, UnknownException)
+
+/* Instruction Storage exception. "Never" generated on the 860. */
+ STD_EXCEPTION(0x400, InstStorage, UnknownException)
+
+/* External Interrupt exception. */
+ STD_EXCEPTION(0x500, ExtInterrupt, external_interrupt)
+
+/* Alignment exception. */
+ . = 0x600
+Alignment:
+ EXCEPTION_PROLOG(SRR0, SRR1)
+ mfspr r4,DAR
+ stw r4,_DAR(r21)
+ mfspr r5,DSISR
+ stw r5,_DSISR(r21)
+ addi r3,r1,STACK_FRAME_OVERHEAD
+ EXC_XFER_TEMPLATE(Alignment, AlignmentException, MSR_KERNEL, COPY_EE)
+
+/* Program check exception */
+ . = 0x700
+ProgramCheck:
+ EXCEPTION_PROLOG(SRR0, SRR1)
+ addi r3,r1,STACK_FRAME_OVERHEAD
+ EXC_XFER_TEMPLATE(ProgramCheck, ProgramCheckException,
+ MSR_KERNEL, COPY_EE)
+
+ /* FPU on MPC5xx available. We will use it later.
+ */
+ STD_EXCEPTION(0x800, FPUnavailable, UnknownException)
+
+ /* I guess we could implement decrementer, and may have
+ * to someday for timekeeping.
+ */
+ STD_EXCEPTION(0x900, Decrementer, timer_interrupt)
+ STD_EXCEPTION(0xa00, Trap_0a, UnknownException)
+ STD_EXCEPTION(0xb00, Trap_0b, UnknownException)
+ STD_EXCEPTION(0xc00, SystemCall, UnknownException)
+ STD_EXCEPTION(0xd00, SingleStep, UnknownException)
+
+ STD_EXCEPTION(0xe00, Trap_0e, UnknownException)
+ STD_EXCEPTION(0xf00, Trap_0f, UnknownException)
+
+ /* On the MPC8xx, this is a software emulation interrupt. It occurs
+ * for all unimplemented and illegal instructions.
+ */
+ STD_EXCEPTION(0x1000, SoftEmu, SoftEmuException)
+ STD_EXCEPTION(0x1100, InstructionTLBMiss, UnknownException)
+ STD_EXCEPTION(0x1200, DataTLBMiss, UnknownException)
+ STD_EXCEPTION(0x1300, InstructionTLBError, UnknownException)
+ STD_EXCEPTION(0x1400, DataTLBError, UnknownException)
+
+ STD_EXCEPTION(0x1500, Reserved5, UnknownException)
+ STD_EXCEPTION(0x1600, Reserved6, UnknownException)
+ STD_EXCEPTION(0x1700, Reserved7, UnknownException)
+ STD_EXCEPTION(0x1800, Reserved8, UnknownException)
+ STD_EXCEPTION(0x1900, Reserved9, UnknownException)
+ STD_EXCEPTION(0x1a00, ReservedA, UnknownException)
+ STD_EXCEPTION(0x1b00, ReservedB, UnknownException)
+
+ STD_EXCEPTION(0x1c00, DataBreakpoint, UnknownException)
+ STD_EXCEPTION(0x1d00, InstructionBreakpoint, DebugException)
+ STD_EXCEPTION(0x1e00, PeripheralBreakpoint, UnknownException)
+ STD_EXCEPTION(0x1f00, DevPortBreakpoint, UnknownException)
+
+
+ .globl _end_of_vectors
+_end_of_vectors:
+
+
+ . = 0x2000
+
+/*
+ * This code finishes saving the registers to the exception frame
+ * and jumps to the appropriate handler for the exception.
+ * Register r21 is pointer into trap frame, r1 has new stack pointer.
+ */
+ .globl transfer_to_handler
+transfer_to_handler:
+ stw r22,_NIP(r21)
+ lis r22,MSR_POW@h
+ andc r23,r23,r22
+ stw r23,_MSR(r21)
+ SAVE_GPR(7, r21)
+ SAVE_4GPRS(8, r21)
+ SAVE_8GPRS(12, r21)
+ SAVE_8GPRS(24, r21)
+ mflr r23
+ andi. r24,r23,0x3f00 /* get vector offset */
+ stw r24,TRAP(r21)
+ li r22,0
+ stw r22,RESULT(r21)
+ mtspr SPRG2,r22 /* r1 is now kernel sp */
+ lwz r24,0(r23) /* virtual address of handler */
+ lwz r23,4(r23) /* where to go when done */
+ mtspr SRR0,r24
+ mtspr SRR1,r20
+ mtlr r23
+ SYNC
+ rfi /* jump to handler, enable MMU */
+
+int_return:
+ mfmsr r28 /* Disable interrupts */
+ li r4,0
+ ori r4,r4,MSR_EE
+ andc r28,r28,r4
+ SYNC /* Some chip revs need this... */
+ mtmsr r28
+ SYNC
+ lwz r2,_CTR(r1)
+ lwz r0,_LINK(r1)
+ mtctr r2
+ mtlr r0
+ lwz r2,_XER(r1)
+ lwz r0,_CCR(r1)
+ mtspr XER,r2
+ mtcrf 0xFF,r0
+ REST_10GPRS(3, r1)
+ REST_10GPRS(13, r1)
+ REST_8GPRS(23, r1)
+ REST_GPR(31, r1)
+ lwz r2,_NIP(r1) /* Restore environment */
+ lwz r0,_MSR(r1)
+ mtspr SRR0,r2
+ mtspr SRR1,r0
+ lwz r0,GPR0(r1)
+ lwz r2,GPR2(r1)
+ lwz r1,GPR1(r1)
+ SYNC
+ rfi
+
+
+/*
+ * unsigned int get_immr (unsigned int mask)
+ *
+ * return (mask ? (IMMR & mask) : IMMR);
+ */
+ .globl get_immr
+get_immr:
+ mr r4,r3 /* save mask */
+ mfspr r3, IMMR /* IMMR */
+ cmpwi 0,r4,0 /* mask != 0 ? */
+ beq 4f
+ and r3,r3,r4 /* IMMR & mask */
+4:
+ blr
+
+ .globl get_pvr
+get_pvr:
+ mfspr r3, PVR
+ blr
+
+
+/*------------------------------------------------------------------------------*/
+
+/*
+ * void relocate_code (addr_sp, gd, addr_moni)
+ *
+ * This "function" does not return, instead it continues in RAM
+ * after relocating the monitor code.
+ *
+ * r3 = dest
+ * r4 = src
+ * r5 = length in bytes
+ * r6 = cachelinesize
+ */
+ .globl relocate_code
+relocate_code:
+ mr r1, r3 /* Set new stack pointer in SRAM */
+ mr r9, r4 /* Save copy of global data pointer in SRAM */
+ mr r10, r5 /* Save copy of monitor destination Address in SRAM */
+
+ GET_GOT
+ mr r3, r5 /* Destination Address */
+ lis r4, CONFIG_SYS_MONITOR_BASE@h /* Source Address */
+ ori r4, r4, CONFIG_SYS_MONITOR_BASE@l
+ lwz r5, GOT(__init_end)
+ sub r5, r5, r4
+
+ /*
+ * Fix GOT pointer:
+ *
+ * New GOT-PTR = (old GOT-PTR - CONFIG_SYS_MONITOR_BASE) + Destination Address
+ *
+ * Offset:
+ */
+ sub r15, r10, r4
+
+ /* First our own GOT */
+ add r12, r12, r15
+ /* the the one used by the C code */
+ add r30, r30, r15
+
+ /*
+ * Now relocate code
+ */
+
+ cmplw cr1,r3,r4
+ addi r0,r5,3
+ srwi. r0,r0,2
+ beq cr1,4f /* In place copy is not necessary */
+ beq 4f /* Protect against 0 count */
+ mtctr r0
+ bge cr1,2f
+
+ la r8,-4(r4)
+ la r7,-4(r3)
+1: lwzu r0,4(r8)
+ stwu r0,4(r7)
+ bdnz 1b
+ b 4f
+
+2: slwi r0,r0,2
+ add r8,r4,r0
+ add r7,r3,r0
+3: lwzu r0,-4(r8)
+ stwu r0,-4(r7)
+ bdnz 3b
+
+4: sync
+ isync
+
+/*
+ * We are done. Do not return, instead branch to second part of board
+ * initialization, now running from RAM.
+ */
+
+ addi r0, r10, in_ram - _start + EXC_OFF_SYS_RESET
+ mtlr r0
+ blr
+
+in_ram:
+
+ /*
+ * Relocation Function, r12 point to got2+0x8000
+ *
+ * Adjust got2 pointers, no need to check for 0, this code
+ * already puts a few entries in the table.
+ */
+ li r0,__got2_entries@sectoff@l
+ la r3,GOT(_GOT2_TABLE_)
+ lwz r11,GOT(_GOT2_TABLE_)
+ mtctr r0
+ sub r11,r3,r11
+ addi r3,r3,-4
+1: lwzu r0,4(r3)
+ cmpwi r0,0
+ beq- 2f
+ add r0,r0,r11
+ stw r0,0(r3)
+2: bdnz 1b
+
+ /*
+ * Now adjust the fixups and the pointers to the fixups
+ * in case we need to move ourselves again.
+ */
+ li r0,__fixup_entries@sectoff@l
+ lwz r3,GOT(_FIXUP_TABLE_)
+ cmpwi r0,0
+ mtctr r0
+ addi r3,r3,-4
+ beq 4f
+3: lwzu r4,4(r3)
+ lwzux r0,r4,r11
+ add r0,r0,r11
+ stw r10,0(r3)
+ stw r0,0(r4)
+ bdnz 3b
+4:
+clear_bss:
+ /*
+ * Now clear BSS segment
+ */
+ lwz r3,GOT(__bss_start)
+ lwz r4,GOT(_end)
+ cmplw 0, r3, r4
+ beq 6f
+
+ li r0, 0
+5:
+ stw r0, 0(r3)
+ addi r3, r3, 4
+ cmplw 0, r3, r4
+ bne 5b
+6:
+
+ mr r3, r9 /* Global Data pointer */
+ mr r4, r10 /* Destination Address */
+ bl board_init_r
+
+ /*
+ * Copy exception vector code to low memory
+ *
+ * r3: dest_addr
+ * r7: source address, r8: end address, r9: target address
+ */
+ .globl trap_init
+trap_init:
+ mflr r4 /* save link register */
+ GET_GOT
+ lwz r7, GOT(_start)
+ lwz r8, GOT(_end_of_vectors)
+
+ li r9, 0x100 /* reset vector always at 0x100 */
+
+ cmplw 0, r7, r8
+ bgelr /* return if r7>=r8 - just in case */
+1:
+ lwz r0, 0(r7)
+ stw r0, 0(r9)
+ addi r7, r7, 4
+ addi r9, r9, 4
+ cmplw 0, r7, r8
+ bne 1b
+
+ /*
+ * relocate `hdlr' and `int_return' entries
+ */
+ li r7, .L_MachineCheck - _start + EXC_OFF_SYS_RESET
+ li r8, Alignment - _start + EXC_OFF_SYS_RESET
+2:
+ bl trap_reloc
+ addi r7, r7, 0x100 /* next exception vector */
+ cmplw 0, r7, r8
+ blt 2b
+
+ li r7, .L_Alignment - _start + EXC_OFF_SYS_RESET
+ bl trap_reloc
+
+ li r7, .L_ProgramCheck - _start + EXC_OFF_SYS_RESET
+ bl trap_reloc
+
+ li r7, .L_FPUnavailable - _start + EXC_OFF_SYS_RESET
+ li r8, SystemCall - _start + EXC_OFF_SYS_RESET
+3:
+ bl trap_reloc
+ addi r7, r7, 0x100 /* next exception vector */
+ cmplw 0, r7, r8
+ blt 3b
+
+ li r7, .L_SingleStep - _start + EXC_OFF_SYS_RESET
+ li r8, _end_of_vectors - _start + EXC_OFF_SYS_RESET
+4:
+ bl trap_reloc
+ addi r7, r7, 0x100 /* next exception vector */
+ cmplw 0, r7, r8
+ blt 4b
+
+ mtlr r4 /* restore link register */
+ blr
+
+#if defined(CONFIG_PATI)
+/* Program the PLL */
+pll_prog_code_start:
+ lis r4, (CONFIG_SYS_IMMR + 0x002fc384)@h
+ ori r4, r4, (CONFIG_SYS_IMMR + 0x002fc384)@l
+ lis r3, (0x55ccaa33)@h
+ ori r3, r3, (0x55ccaa33)@l
+ stw r3, 0(r4)
+ lis r4, (CONFIG_SYS_IMMR + 0x002fc284)@h
+ ori r4, r4, (CONFIG_SYS_IMMR + 0x002fc284)@l
+ lis r3, CONFIG_SYS_PLPRCR@h
+ ori r3, r3, CONFIG_SYS_PLPRCR@l
+ stw r3, 0(r4)
+ addis r3,0,0x0
+ ori r3,r3,0xA000
+ mtctr r3
+..spinlp:
+ bdnz ..spinlp /* spin loop */
+ blr
+pll_prog_code_end:
+ nop
+ blr
+#endif
diff --git a/arch/ppc/cpu/mpc5xx/traps.c b/arch/ppc/cpu/mpc5xx/traps.c
new file mode 100644
index 0000000000..6882c21a41
--- /dev/null
+++ b/arch/ppc/cpu/mpc5xx/traps.c
@@ -0,0 +1,227 @@
+/*
+ * linux/arch/ppc/kernel/traps.c
+ *
+ * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
+ *
+ * Modified by Cort Dougan (cort@cs.nmt.edu)
+ * and Paul Mackerras (paulus@cs.anu.edu.au)
+ *
+ * (C) Copyright 2000
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/*
+ * This file handles the architecture-dependent parts of hardware exceptions
+ */
+
+#include <common.h>
+#include <command.h>
+#include <kgdb.h>
+#include <asm/processor.h>
+
+#if defined(CONFIG_CMD_BEDBUG)
+extern void do_bedbug_breakpoint(struct pt_regs *);
+#endif
+
+/* Returns 0 if exception not found and fixup otherwise. */
+extern unsigned long search_exception_table(unsigned long);
+
+/* THIS NEEDS CHANGING to use the board info structure.
+*/
+#define END_OF_MEM 0x0001000
+
+
+/*
+ * Print stack backtrace
+ */
+void print_backtrace(unsigned long *sp)
+{
+ int cnt = 0;
+ unsigned long i;
+
+ printf("Call backtrace: ");
+ while (sp) {
+ if ((uint)sp > END_OF_MEM)
+ break;
+
+ i = sp[1];
+ if (cnt++ % 7 == 0)
+ printf("\n");
+ printf("%08lX ", i);
+ if (cnt > 32) break;
+ sp = (unsigned long *)*sp;
+ }
+ printf("\n");
+}
+
+/*
+ * Print current registers
+ */
+void show_regs(struct pt_regs * regs)
+{
+ int i;
+ printf("NIP: %08lX XER: %08lX LR: %08lX REGS: %p TRAP: %04lx DAR: %08lX\n",
+ regs->nip, regs->xer, regs->link, regs, regs->trap, regs->dar);
+ printf("MSR: %08lx EE: %01x PR: %01x FP: %01x ME: %01x IR/DR: %01x%01x\n",
+ regs->msr, regs->msr&MSR_EE ? 1 : 0, regs->msr&MSR_PR ? 1 : 0,
+ regs->msr & MSR_FP ? 1 : 0,regs->msr&MSR_ME ? 1 : 0,
+ regs->msr&MSR_IR ? 1 : 0,
+ regs->msr&MSR_DR ? 1 : 0);
+
+ printf("\n");
+ for (i = 0; i < 32; i++) {
+ if ((i % 8) == 0)
+ {
+ printf("GPR%02d: ", i);
+ }
+
+ printf("%08lX ", regs->gpr[i]);
+ if ((i % 8) == 7)
+ {
+ printf("\n");
+ }
+ }
+}
+
+
+/*
+ * General exception handler routine
+ */
+void _exception(int signr, struct pt_regs *regs)
+{
+ show_regs(regs);
+ print_backtrace((unsigned long *)regs->gpr[1]);
+ panic("Exception in kernel pc %lx signal %d",regs->nip,signr);
+}
+
+/*
+ * Machine check exception handler routine
+ */
+void MachineCheckException(struct pt_regs *regs)
+{
+ unsigned long fixup;
+
+ /* Probing PCI using config cycles cause this exception
+ * when a device is not present. Catch it and return to
+ * the PCI exception handler.
+ */
+ if ((fixup = search_exception_table(regs->nip)) != 0) {
+ regs->nip = fixup;
+ return;
+ }
+
+#if defined(CONFIG_CMD_KGDB)
+ if (debugger_exception_handler && (*debugger_exception_handler)(regs))
+ return;
+#endif
+
+ printf("Machine check in kernel mode.\n");
+ printf("Caused by (from msr): ");
+ printf("regs %p ",regs);
+ switch( regs->msr & 0x000F0000) {
+ case (0x80000000>>12):
+ printf("Machine check signal\n");
+ break;
+ case (0x80000000>>13):
+ printf("Transfer error ack signal\n");
+ break;
+ case (0x80000000>>14):
+ printf("Data parity signal\n");
+ break;
+ case (0x80000000>>15):
+ printf("Address parity signal\n");
+ break;
+ default:
+ printf("Unknown values in msr\n");
+ }
+ show_regs(regs);
+ print_backtrace((unsigned long *)regs->gpr[1]);
+ panic("machine check");
+}
+
+/*
+ * Alignment exception handler routine
+ */
+void AlignmentException(struct pt_regs *regs)
+{
+#if defined(CONFIG_CMD_KGDB)
+ if (debugger_exception_handler && (*debugger_exception_handler)(regs))
+ return;
+#endif
+ show_regs(regs);
+ print_backtrace((unsigned long *)regs->gpr[1]);
+ panic("Alignment Exception");
+}
+
+/*
+ * Program check exception handler routine
+ */
+void ProgramCheckException(struct pt_regs *regs)
+{
+#if defined(CONFIG_CMD_KGDB)
+ if (debugger_exception_handler && (*debugger_exception_handler)(regs))
+ return;
+#endif
+ show_regs(regs);
+ print_backtrace((unsigned long *)regs->gpr[1]);
+ panic("Program Check Exception");
+}
+
+/*
+ * Software emulation exception handler routine
+ */
+void SoftEmuException(struct pt_regs *regs)
+{
+#if defined(CONFIG_CMD_KGDB)
+ if (debugger_exception_handler && (*debugger_exception_handler)(regs))
+ return;
+#endif
+ show_regs(regs);
+ print_backtrace((unsigned long *)regs->gpr[1]);
+ panic("Software Emulation Exception");
+}
+
+
+/*
+ * Unknown exception handler routine
+ */
+void UnknownException(struct pt_regs *regs)
+{
+#if defined(CONFIG_CMD_KGDB)
+ if (debugger_exception_handler && (*debugger_exception_handler)(regs))
+ return;
+#endif
+ printf("Bad trap at PC: %lx, SR: %lx, vector=%lx\n",
+ regs->nip, regs->msr, regs->trap);
+ _exception(0, regs);
+}
+
+/*
+ * Debug exception handler routine
+ */
+void DebugException(struct pt_regs *regs)
+{
+ printf("Debugger trap at @ %lx\n", regs->nip );
+ show_regs(regs);
+#if defined(CONFIG_CMD_BEDBUG)
+ do_bedbug_breakpoint( regs );
+#endif
+}
diff --git a/arch/ppc/cpu/mpc5xx/u-boot.lds b/arch/ppc/cpu/mpc5xx/u-boot.lds
new file mode 100644
index 0000000000..55190c72d9
--- /dev/null
+++ b/arch/ppc/cpu/mpc5xx/u-boot.lds
@@ -0,0 +1,137 @@
+/*
+ * (C) Copyright 2001 Wolfgang Denk, DENX Software Engineering, wd@denx.de
+ * (C) Copyright 2003 Martin Winistoerfer, martinwinistoerfer@gmx.ch
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+OUTPUT_ARCH(powerpc)
+/* Do we need any of these for elf?
+ __DYNAMIC = 0; */
+SECTIONS
+{
+ /* Read-only sections, merged into text segment: */
+ . = + SIZEOF_HEADERS;
+ .interp : { *(.interp) }
+ .hash : { *(.hash) }
+ .dynsym : { *(.dynsym) }
+ .dynstr : { *(.dynstr) }
+ .rel.text : { *(.rel.text) }
+ .rela.text : { *(.rela.text) }
+ .rel.data : { *(.rel.data) }
+ .rela.data : { *(.rela.data) }
+ .rel.rodata : { *(.rel.rodata) }
+ .rela.rodata : { *(.rela.rodata) }
+ .rel.got : { *(.rel.got) }
+ .rela.got : { *(.rela.got) }
+ .rel.ctors : { *(.rel.ctors) }
+ .rela.ctors : { *(.rela.ctors) }
+ .rel.dtors : { *(.rel.dtors) }
+ .rela.dtors : { *(.rela.dtors) }
+ .rel.bss : { *(.rel.bss) }
+ .rela.bss : { *(.rela.bss) }
+ .rel.plt : { *(.rel.plt) }
+ .rela.plt : { *(.rela.plt) }
+ .init : { *(.init) }
+ .plt : { *(.plt) }
+ .text :
+ {
+ /* WARNING - the following is hand-optimized to fit within */
+ /* the sector layout of our flash chips! XXX FIXME XXX */
+
+ arch/ppc/cpu/mpc5xx/start.o (.text)
+
+ *(.text)
+ *(.got1)
+ }
+ _etext = .;
+ PROVIDE (etext = .);
+ .rodata :
+ {
+ *(.eh_frame)
+ *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*)))
+ }
+ .fini : { *(.fini) } =0
+ .ctors : { *(.ctors) }
+ .dtors : { *(.dtors) }
+
+ /* Read-write section, merged into data segment: */
+ . = (. + 0x00FF) & 0xFFFFFF00;
+ _erotext = .;
+ PROVIDE (erotext = .);
+ .reloc :
+ {
+ *(.got)
+ _GOT2_TABLE_ = .;
+ *(.got2)
+ _FIXUP_TABLE_ = .;
+ *(.fixup)
+ }
+ __got2_entries = (_FIXUP_TABLE_ - _GOT2_TABLE_) >>2;
+ __fixup_entries = (. - _FIXUP_TABLE_)>>2;
+
+ .data :
+ {
+ *(.data)
+ *(.data1)
+ *(.sdata)
+ *(.sdata2)
+ *(.dynamic)
+ CONSTRUCTORS
+ }
+ _edata = .;
+ PROVIDE (edata = .);
+
+ . = .;
+ __u_boot_cmd_start = .;
+ .u_boot_cmd : { *(.u_boot_cmd) }
+ __u_boot_cmd_end = .;
+
+
+ . = .;
+ __start___ex_table = .;
+ __ex_table : { *(__ex_table) }
+ __stop___ex_table = .;
+
+ . = ALIGN(256);
+ __init_begin = .;
+ .text.init : { *(.text.init) }
+ .data.init : { *(.data.init) }
+ . = ALIGN(256);
+ __init_end = .;
+
+ __bss_start = .;
+ .bss (NOLOAD) :
+ {
+ *(.sbss) *(.scommon)
+ *(.dynbss)
+ *(.bss)
+ *(COMMON)
+ . = ALIGN(4);
+ }
+
+ _end = . ;
+ PROVIDE (end = .);
+/* . = env_start;
+ .ppcenv :
+ {
+ common/env_embedded.o (.ppcenv)
+ }
+*/
+}
generated by cgit (git 2.34.1) at 2024-12-28 21:16:03 +0000