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-rw-r--r--board/mx31ads/Makefile47
-rw-r--r--board/mx31ads/config.mk1
-rw-r--r--board/mx31ads/lowlevel_init.S281
-rw-r--r--board/mx31ads/mx31ads.c94
-rw-r--r--board/mx31ads/u-boot.lds59
5 files changed, 482 insertions, 0 deletions
diff --git a/board/mx31ads/Makefile b/board/mx31ads/Makefile
new file mode 100644
index 0000000000..dfadd9685c
--- /dev/null
+++ b/board/mx31ads/Makefile
@@ -0,0 +1,47 @@
+#
+# Copyright (C) 2008, Guennadi Liakhovetski <lg@denx.de>
+#
+# 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
+#
+
+include $(TOPDIR)/config.mk
+
+LIB = $(obj)lib$(BOARD).a
+
+COBJS := mx31ads.o
+SOBJS := lowlevel_init.o
+
+SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS := $(addprefix $(obj),$(COBJS))
+SOBJS := $(addprefix $(obj),$(SOBJS))
+
+$(LIB): $(obj).depend $(OBJS) $(SOBJS)
+ $(AR) $(ARFLAGS) $@ $(OBJS) $(SOBJS)
+
+clean:
+ rm -f $(SOBJS) $(OBJS)
+
+distclean: clean
+ rm -f $(LIB) core *.bak .depend
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/board/mx31ads/config.mk b/board/mx31ads/config.mk
new file mode 100644
index 0000000000..d34dc02d96
--- /dev/null
+++ b/board/mx31ads/config.mk
@@ -0,0 +1 @@
+TEXT_BASE = 0x87f00000
diff --git a/board/mx31ads/lowlevel_init.S b/board/mx31ads/lowlevel_init.S
new file mode 100644
index 0000000000..099a7ca81b
--- /dev/null
+++ b/board/mx31ads/lowlevel_init.S
@@ -0,0 +1,281 @@
+/*
+ * Copyright (C) 2008, Guennadi Liakhovetski <lg@denx.de>
+ *
+ * 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
+ */
+
+#include <asm/arch/mx31-regs.h>
+
+.macro REG reg, val
+ ldr r2, =\reg
+ ldr r3, =\val
+ str r3, [r2]
+.endm
+
+.macro REG8 reg, val
+ ldr r2, =\reg
+ ldr r3, =\val
+ strb r3, [r2]
+.endm
+
+.macro DELAY loops
+ ldr r2, =\loops
+1:
+ subs r2, r2, #1
+ nop
+ bcs 1b
+.endm
+
+/* RedBoot: AIPS setup - Only setup MPROTx registers.
+ * The PACR default values are good.*/
+.macro init_aips
+ /*
+ * Set all MPROTx to be non-bufferable, trusted for R/W,
+ * not forced to user-mode.
+ */
+ ldr r0, =0x43F00000
+ ldr r1, =0x77777777
+ str r1, [r0, #0x00]
+ str r1, [r0, #0x04]
+ ldr r0, =0x53F00000
+ str r1, [r0, #0x00]
+ str r1, [r0, #0x04]
+
+ /*
+ * Clear the on and off peripheral modules Supervisor Protect bit
+ * for SDMA to access them. Did not change the AIPS control registers
+ * (offset 0x20) access type
+ */
+ ldr r0, =0x43F00000
+ ldr r1, =0x0
+ str r1, [r0, #0x40]
+ str r1, [r0, #0x44]
+ str r1, [r0, #0x48]
+ str r1, [r0, #0x4C]
+ ldr r1, [r0, #0x50]
+ and r1, r1, #0x00FFFFFF
+ str r1, [r0, #0x50]
+
+ ldr r0, =0x53F00000
+ ldr r1, =0x0
+ str r1, [r0, #0x40]
+ str r1, [r0, #0x44]
+ str r1, [r0, #0x48]
+ str r1, [r0, #0x4C]
+ ldr r1, [r0, #0x50]
+ and r1, r1, #0x00FFFFFF
+ str r1, [r0, #0x50]
+.endm /* init_aips */
+
+/* RedBoot: MAX (Multi-Layer AHB Crossbar Switch) setup */
+.macro init_max
+ ldr r0, =0x43F04000
+ /* MPR - priority is M4 > M2 > M3 > M5 > M0 > M1 */
+ ldr r1, =0x00302154
+ str r1, [r0, #0x000] /* for S0 */
+ str r1, [r0, #0x100] /* for S1 */
+ str r1, [r0, #0x200] /* for S2 */
+ str r1, [r0, #0x300] /* for S3 */
+ str r1, [r0, #0x400] /* for S4 */
+ /* SGPCR - always park on last master */
+ ldr r1, =0x10
+ str r1, [r0, #0x010] /* for S0 */
+ str r1, [r0, #0x110] /* for S1 */
+ str r1, [r0, #0x210] /* for S2 */
+ str r1, [r0, #0x310] /* for S3 */
+ str r1, [r0, #0x410] /* for S4 */
+ /* MGPCR - restore default values */
+ ldr r1, =0x0
+ str r1, [r0, #0x800] /* for M0 */
+ str r1, [r0, #0x900] /* for M1 */
+ str r1, [r0, #0xA00] /* for M2 */
+ str r1, [r0, #0xB00] /* for M3 */
+ str r1, [r0, #0xC00] /* for M4 */
+ str r1, [r0, #0xD00] /* for M5 */
+.endm /* init_max */
+
+/* RedBoot: M3IF setup */
+.macro init_m3if
+ /* Configure M3IF registers */
+ ldr r1, =0xB8003000
+ /*
+ * M3IF Control Register (M3IFCTL)
+ * MRRP[0] = L2CC0 not on priority list (0 << 0) = 0x00000000
+ * MRRP[1] = L2CC1 not on priority list (0 << 0) = 0x00000000
+ * MRRP[2] = MBX not on priority list (0 << 0) = 0x00000000
+ * MRRP[3] = MAX1 not on priority list (0 << 0) = 0x00000000
+ * MRRP[4] = SDMA not on priority list (0 << 0) = 0x00000000
+ * MRRP[5] = MPEG4 not on priority list (0 << 0) = 0x00000000
+ * MRRP[6] = IPU1 on priority list (1 << 6) = 0x00000040
+ * MRRP[7] = IPU2 not on priority list (0 << 0) = 0x00000000
+ * ------------
+ * 0x00000040
+ */
+ ldr r0, =0x00000040
+ str r0, [r1] /* M3IF control reg */
+.endm /* init_m3if */
+
+/* RedBoot: To support 133MHz DDR */
+.macro init_drive_strength
+ /*
+ * Disable maximum drive strength SDRAM/DDR lines by clearing DSE1 bits
+ * in SW_PAD_CTL registers
+ */
+
+ /* SDCLK */
+ ldr r1, =0x43FAC200
+ ldr r0, [r1, #0x6C]
+ bic r0, r0, #(1 << 12)
+ str r0, [r1, #0x6C]
+
+ /* CAS */
+ ldr r0, [r1, #0x70]
+ bic r0, r0, #(1 << 22)
+ str r0, [r1, #0x70]
+
+ /* RAS */
+ ldr r0, [r1, #0x74]
+ bic r0, r0, #(1 << 2)
+ str r0, [r1, #0x74]
+
+ /* CS2 (CSD0) */
+ ldr r0, [r1, #0x7C]
+ bic r0, r0, #(1 << 22)
+ str r0, [r1, #0x7C]
+
+ /* DQM3 */
+ ldr r0, [r1, #0x84]
+ bic r0, r0, #(1 << 22)
+ str r0, [r1, #0x84]
+
+ /* DQM2, DQM1, DQM0, SD31-SD0, A25-A0, MA10 (0x288..0x2DC) */
+ ldr r2, =22 /* (0x2E0 - 0x288) / 4 = 22 */
+pad_loop:
+ ldr r0, [r1, #0x88]
+ bic r0, r0, #(1 << 22)
+ bic r0, r0, #(1 << 12)
+ bic r0, r0, #(1 << 2)
+ str r0, [r1, #0x88]
+ add r1, r1, #4
+ subs r2, r2, #0x1
+ bne pad_loop
+.endm /* init_drive_strength */
+
+/* CPLD on CS4 setup */
+.macro init_cs4
+ ldr r0, =WEIM_BASE
+ ldr r1, =0x0000D843
+ str r1, [r0, #0x40]
+ ldr r1, =0x22252521
+ str r1, [r0, #0x44]
+ ldr r1, =0x22220A00
+ str r1, [r0, #0x48]
+.endm /* init_cs4 */
+
+.globl lowlevel_init
+lowlevel_init:
+
+ /* Redboot initializes very early AIPS, what for?
+ * Then it also initializes Multi-Layer AHB Crossbar Switch,
+ * M3IF */
+ /* Also setup the Peripheral Port Remap register inside the core */
+ ldr r0, =0x40000015 /* start from AIPS 2GB region */
+ mcr p15, 0, r0, c15, c2, 4
+
+ init_aips
+
+ init_max
+
+ init_m3if
+
+ init_drive_strength
+
+ init_cs4
+
+ /* Image Processing Unit: */
+ /* Too early to switch display on? */
+ REG IPU_CONF, IPU_CONF_DI_EN /* Switch on Display Interface */
+ /* Clock Control Module: */
+ REG CCM_CCMR, 0x074B0BF5 /* Use CKIH, MCU PLL off */
+
+ DELAY 0x40000
+
+ REG CCM_CCMR, 0x074B0BF5 | CCMR_MPE /* MCU PLL on */
+ REG CCM_CCMR, (0x074B0BF5 | CCMR_MPE) & ~CCMR_MDS /* Switch to MCU PLL */
+
+ /* PBC CPLD on CS4 */
+ mov r1, #CS4_BASE
+ ldrh r1, [r1, #0x2]
+ /* Is 27MHz switch set? */
+ ands r1, r1, #0x16
+
+ /* 532-133-66.5 */
+ ldr r0, =CCM_BASE
+ ldr r1, =0xFF871D58
+ /* PDR0 */
+ str r1, [r0, #0x4]
+ ldreq r1, MPCTL_PARAM_532
+ ldrne r1, MPCTL_PARAM_532_27
+ /* MPCTL */
+ str r1, [r0, #0x10]
+
+ /* Set UPLL=240MHz, USB=60MHz */
+ ldr r1, =0x49FCFE7F
+ /* PDR1 */
+ str r1, [r0, #0x8]
+ ldreq r1, UPCTL_PARAM_240
+ ldrne r1, UPCTL_PARAM_240_27
+ /* UPCTL */
+ str r1, [r0, #0x14]
+ /* default CLKO to 1/8 of the ARM core */
+ mov r1, #0x000002C0
+ add r1, r1, #0x00000006
+ /* COSR */
+ str r1, [r0, #0x1c]
+
+ /* RedBoot sets 0x1ff, 7, 3, 5, 1, 3, 0 */
+/* REG CCM_PDR0, PDR0_CSI_PODF(0x1ff) | PDR0_PER_PODF(7) | PDR0_HSP_PODF(2) | PDR0_NFC_PODF(6) | PDR0_IPG_PODF(1) | PDR0_MAX_PODF(2) | PDR0_MCU_PODF(0)*/
+
+ /* Redboot: 0, 51, 10, 12 / 0, 14, 9, 13 */
+/* REG CCM_MPCTL, PLL_PD(0) | PLL_MFD(0x33) | PLL_MFI(7) | PLL_MFN(0x23)*/
+ /* Default: 1, 4, 12, 1 */
+ REG CCM_SPCTL, PLL_PD(1) | PLL_MFD(4) | PLL_MFI(12) | PLL_MFN(1)
+
+ /* B8xxxxxx - NAND, 8xxxxxxx - CSD0 RAM */
+ REG 0xB8001010, 0x00000004
+ REG 0xB8001004, 0x006ac73a
+ REG 0xB8001000, 0x92100000
+ REG 0x80000f00, 0x12344321
+ REG 0xB8001000, 0xa2100000
+ REG 0x80000000, 0x12344321
+ REG 0x80000000, 0x12344321
+ REG 0xB8001000, 0xb2100000
+ REG8 0x80000033, 0xda
+ REG8 0x81000000, 0xff
+ REG 0xB8001000, 0x82226080
+ REG 0x80000000, 0xDEADBEEF
+ REG 0xB8001010, 0x0000000c
+
+ mov pc, lr
+
+MPCTL_PARAM_532:
+ .word (((1-1) << 26) + ((52-1) << 16) + (10 << 10) + (12 << 0))
+MPCTL_PARAM_532_27:
+ .word (((1-1) << 26) + ((15-1) << 16) + (9 << 10) + (13 << 0))
+UPCTL_PARAM_240:
+ .word (((2-1) << 26) + ((13-1) << 16) + (9 << 10) + (3 << 0))
+UPCTL_PARAM_240_27:
+ .word (((2-1) << 26) + ((9 -1) << 16) + (8 << 10) + (8 << 0))
diff --git a/board/mx31ads/mx31ads.c b/board/mx31ads/mx31ads.c
new file mode 100644
index 0000000000..7c50c023ec
--- /dev/null
+++ b/board/mx31ads/mx31ads.c
@@ -0,0 +1,94 @@
+/*
+ * Copyright (C) 2008, Guennadi Liakhovetski <lg@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
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/mx31.h>
+#include <asm/arch/mx31-regs.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int dram_init (void)
+{
+ gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
+ gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
+
+ return 0;
+}
+
+int board_init (void)
+{
+ int i;
+#if 0
+ /* CS0: Nor Flash */
+ /*
+ * These are values from the RedBoot sources by Freescale. However,
+ * under U-Boot with this configuration 32-bit accesses don't work,
+ * lower 16 bits of data are read twice for each 32-bit read.
+ */
+ __REG(CSCR_U(0)) = 0x23524E80;
+ __REG(CSCR_L(0)) = 0x10000D03; /* WRAP bit (1) is suspicious here, but
+ * disabling it doesn't help either */
+ __REG(CSCR_A(0)) = 0x00720900;
+#endif
+
+ /* setup pins for UART1 */
+ mx31_gpio_mux(MUX_RXD1__UART1_RXD_MUX);
+ mx31_gpio_mux(MUX_TXD1__UART1_TXD_MUX);
+ mx31_gpio_mux(MUX_RTS1__UART1_RTS_B);
+ mx31_gpio_mux(MUX_RTS1__UART1_CTS_B);
+
+ /* PBC setup */
+ /* Enable UART transceivers also reset the Ethernet/external UART */
+ readw(CS4_BASE + 4);
+
+ writew(0x8023, CS4_BASE + 4);
+
+ /* RedBoot also has an empty loop with 100000 iterations here -
+ * clock doesn't run yet */
+ for (i = 0; i < 100000; i++)
+ ;
+
+ /* Clear the reset, toggle the LEDs */
+ writew(0xDF, CS4_BASE + 6);
+
+ /* clock still doesn't run */
+ for (i = 0; i < 100000; i++)
+ ;
+
+ /* See 1.5.4 in IMX31ADSE_PERI_BUS_CNTRL_CPLD_RM.pdf */
+ readb(CS4_BASE + 8);
+ readb(CS4_BASE + 7);
+ readb(CS4_BASE + 8);
+ readb(CS4_BASE + 7);
+
+ gd->bd->bi_arch_number = 447; /* board id for linux */
+ gd->bd->bi_boot_params = 0x80000100; /* adress of boot parameters */
+
+ return 0;
+}
+
+int checkboard (void)
+{
+ printf("Board: MX31ADS\n");
+ return 0;
+}
diff --git a/board/mx31ads/u-boot.lds b/board/mx31ads/u-boot.lds
new file mode 100644
index 0000000000..1460adcdd8
--- /dev/null
+++ b/board/mx31ads/u-boot.lds
@@ -0,0 +1,59 @@
+/*
+ * January 2004 - Changed to support H4 device
+ * Copyright (c) 2004 Texas Instruments
+ *
+ * (C) Copyright 2002
+ * Gary Jennejohn, DENX Software Engineering, <gj@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
+ */
+
+OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
+OUTPUT_ARCH(arm)
+ENTRY(_start)
+SECTIONS
+{
+ . = 0x00000000;
+
+ . = ALIGN(4);
+ .text :
+ {
+ cpu/arm1136/start.o (.text)
+ *(.text)
+ }
+
+ . = ALIGN(4);
+ .rodata : { *(.rodata) }
+
+ . = ALIGN(4);
+ .data : { *(.data) }
+
+ . = ALIGN(4);
+ .got : { *(.got) }
+
+ . = .;
+ __u_boot_cmd_start = .;
+ .u_boot_cmd : { *(.u_boot_cmd) }
+ __u_boot_cmd_end = .;
+
+ . = ALIGN(4);
+ __bss_start = .;
+ .bss : { *(.bss) }
+ _end = .;
+}
generated by cgit (git 2.34.1) at 2024-12-26 19:52:49 +0000