mpq101: initial support for Mercury Computer Systems MPQ101 board

Mpq101 is a RapidIO development board in AMC form factor, featuring MPC8548
processor, 512MB of hardwired DDR2 RAM, 128MB of hardwired NAND flash
memory, real time clock and additional serial EEPROM on i2c bus (enabled).
USB controller is available, but not presently enabled.

Additional board information is available at:
http://www.mc.com/products/boards/ensemble_mpq101_rapidio_powerquicc_iii.aspx

Environment is configured to precede the actual u-boot image so that it's
located at the beginning of flash erase block (made necessary by the recent
changes to the embedded environment handling). This is achieved by means of
custom ld script.

Signed-off-by: Alex Dubov <oakad@yahoo.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

5 files changed, 448 insertions, 0 deletions

diff --git a/board/mercury/mpq101/Makefile b/board/mercury/mpq101/Makefile
new file mode 100644
index 0000000000..58bc1b3f1f
--- /dev/null
+++ b/board/mercury/mpq101/Makefile
@@ -0,0 +1,53 @@
+#
+# Copyright 2007 Freescale Semiconductor, Inc.
+# (C) Copyright 2001-2006
+# 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
+#
+
+include $(TOPDIR)/config.mk
+
+LIB	= $(obj)lib$(BOARD).o
+
+COBJS-y	+= $(BOARD).o
+COBJS-y	+= law.o
+COBJS-y	+= tlb.o
+
+SRCS	:= $(SOBJS:.o=.S) $(COBJS-y:.o=.c)
+OBJS	:= $(addprefix $(obj),$(COBJS-y))
+SOBJS	:= $(addprefix $(obj),$(SOBJS))
+
+$(LIB):	$(obj).depend $(OBJS) $(SOBJS)
+	$(call cmd_link_o_target, $(OBJS))
+
+clean:
+	rm -f $(OBJS) $(SOBJS)
+
+distclean:	clean
+	rm -f $(LIB) core *.bak .depend
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/board/mercury/mpq101/law.c b/board/mercury/mpq101/law.c
new file mode 100644
index 0000000000..0e23a6aabd
--- /dev/null
+++ b/board/mercury/mpq101/law.c
@@ -0,0 +1,52 @@
+/*
+ * Copyright 2008 Freescale Semiconductor, Inc.
+ *
+ * (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
+ */
+
+#include <common.h>
+#include <asm/fsl_law.h>
+#include <asm/mmu.h>
+
+/*
+ * LAW(Local Access Window) configuration:
+ *
+ * 0x0000_0000     0x1fff_ffff     DDR                     SYS_SDRAM_SIZE
+ * 0xc000_0000     0xdfff_ffff     RapidIO (set elsewhere) 512M
+ * 0xe000_0000     0xe000_ffff     CCSR    (set elsewhere) 1M
+ * 0xf000_0000     0xffff_ffff     LBC options + FLASH     256M
+ *
+ * Notes:
+ *    CCSRBAR and L2-as-SRAM don't need a configured Local Access Window.
+ *    If flash is 8M at default position (last 8M), no LAW needed.
+ *
+ * LAW 0 is reserved for boot mapping
+ */
+
+struct law_entry law_table[] = {
+	SET_LAW(CONFIG_SYS_SDRAM_BASE, CONFIG_SYS_SDRAM_SIZE_LOG - 1,
+		LAW_TRGT_IF_DDR_1),
+	SET_LAW(CONFIG_SYS_LBC_OPTION_BASE_PHYS, LAW_SIZE_256M,
+		LAW_TRGT_IF_LBC)
+};
+
+int num_law_entries = ARRAY_SIZE(law_table);
diff --git a/board/mercury/mpq101/mpq101.c b/board/mercury/mpq101/mpq101.c
new file mode 100644
index 0000000000..e02e87f111
--- /dev/null
+++ b/board/mercury/mpq101/mpq101.c
@@ -0,0 +1,129 @@
+/*
+ * (C) Copyright 2011 Alex Dubov <oakad@yahoo.com>
+ *
+ * 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/processor.h>
+#include <asm/mmu.h>
+#include <asm/immap_85xx.h>
+#include <asm/fsl_law.h>
+#include <asm/io.h>
+#include <miiphy.h>
+#include <libfdt.h>
+#include <fdt_support.h>
+
+/*
+ * Initialize Local Bus
+ */
+void local_bus_init(void)
+{
+	fsl_lbc_t *lbc = LBC_BASE_ADDR;
+
+	out_be32(&lbc->ltesr, 0xffffffff); /* Clear LBC error interrupts */
+	out_be32(&lbc->lteir, 0xffffffff); /* Enable LBC error interrupts */
+}
+
+int checkboard(void)
+{
+	ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
+	ccsr_local_ecm_t *ecm = (void *)(CONFIG_SYS_MPC85xx_ECM_ADDR);
+
+	puts("Board: Mercury Computer Systems, Inc. MPQ-101 ");
+#ifdef CONFIG_PHYS_64BIT
+	puts("(36-bit addrmap) ");
+#endif
+	putc('\n');
+
+	/*
+	 * Initialize local bus.
+	 */
+	local_bus_init();
+
+	/*
+	 * Hack TSEC 3 and 4 IO voltages.
+	 */
+	out_be32(&gur->tsec34ioovcr, 0xe7e0); /*  1110 0111 1110 0xxx */
+
+	out_be32(&ecm->eedr, 0xffffffff); /* clear ecm errors */
+	out_be32(&ecm->eeer, 0xffffffff); /* enable ecm errors */
+	return 0;
+}
+
+phys_size_t fixed_sdram(void)
+{
+	ccsr_ddr_t *ddr = (void *)(CONFIG_SYS_MPC85xx_DDR_ADDR);
+	const char *p_mode = getenv("perf_mode");
+
+	puts("Initializing....");
+
+	out_be32(&ddr->cs0_bnds, CONFIG_SYS_DDR_CS0_BNDS);
+	out_be32(&ddr->cs0_config, CONFIG_SYS_DDR_CS0_CONFIG);
+
+	out_be32(&ddr->timing_cfg_3, CONFIG_SYS_DDR_TIMING_3);
+	out_be32(&ddr->timing_cfg_0, CONFIG_SYS_DDR_TIMING_0);
+
+	if (p_mode && !strcmp("performance", p_mode)) {
+		out_be32(&ddr->timing_cfg_1, CONFIG_SYS_DDR_TIMING_1_PERF);
+		out_be32(&ddr->timing_cfg_2, CONFIG_SYS_DDR_TIMING_2_PERF);
+		out_be32(&ddr->sdram_mode, CONFIG_SYS_DDR_MODE_1_PERF);
+		out_be32(&ddr->sdram_mode_2, CONFIG_SYS_DDR_MODE_2_PERF);
+		out_be32(&ddr->sdram_interval, CONFIG_SYS_DDR_INTERVAL_PERF);
+	} else {
+		out_be32(&ddr->timing_cfg_1, CONFIG_SYS_DDR_TIMING_1);
+		out_be32(&ddr->timing_cfg_2, CONFIG_SYS_DDR_TIMING_2);
+		out_be32(&ddr->sdram_mode, CONFIG_SYS_DDR_MODE_1);
+		out_be32(&ddr->sdram_mode_2, CONFIG_SYS_DDR_MODE_2);
+		out_be32(&ddr->sdram_interval, CONFIG_SYS_DDR_INTERVAL);
+	}
+
+	out_be32(&ddr->sdram_clk_cntl, CONFIG_SYS_DDR_CLK_CTRL);
+	out_be32(&ddr->sdram_cfg_2, CONFIG_SYS_DDR_CONTROL2);
+
+	asm("sync;isync");
+	udelay(500);
+
+	out_be32(&ddr->sdram_cfg, CONFIG_SYS_DDR_CONTROL);
+	asm("sync; isync");
+	udelay(500);
+
+	return ((phys_size_t)1) << CONFIG_SYS_SDRAM_SIZE_LOG;
+}
+
+void pci_init_board(void)
+{
+	ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
+
+	/* PCI is disabled */
+	out_be32(&gur->devdisr, in_be32(&gur->devdisr)
+				| MPC85xx_DEVDISR_PCI1
+				| MPC85xx_DEVDISR_PCI2
+				| MPC85xx_DEVDISR_PCIE);
+}
+
+
+#if defined(CONFIG_OF_BOARD_SETUP)
+
+void ft_board_setup(void *blob, bd_t *bd)
+{
+	ft_cpu_setup(blob, bd);
+}
+
+#endif
diff --git a/board/mercury/mpq101/tlb.c b/board/mercury/mpq101/tlb.c
new file mode 100644
index 0000000000..fd2eaec484
--- /dev/null
+++ b/board/mercury/mpq101/tlb.c
@@ -0,0 +1,82 @@
+/*
+ * (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
+ */
+
+#include <common.h>
+#include <asm/mmu.h>
+
+struct fsl_e_tlb_entry tlb_table[] = {
+	/* TLB 0 - for temp stack in cache */
+	SET_TLB_ENTRY(0, CONFIG_SYS_INIT_RAM_ADDR, CONFIG_SYS_INIT_RAM_ADDR,
+		      MAS3_SX|MAS3_SW|MAS3_SR, 0,
+		      0, 0, BOOKE_PAGESZ_4K, 0),
+	SET_TLB_ENTRY(0, CONFIG_SYS_INIT_RAM_ADDR + 4 * 1024,
+		      CONFIG_SYS_INIT_RAM_ADDR + 4 * 1024,
+		      MAS3_SX|MAS3_SW|MAS3_SR, 0,
+		      0, 0, BOOKE_PAGESZ_4K, 0),
+	SET_TLB_ENTRY(0, CONFIG_SYS_INIT_RAM_ADDR + 8 * 1024,
+		      CONFIG_SYS_INIT_RAM_ADDR + 8 * 1024,
+		      MAS3_SX|MAS3_SW|MAS3_SR, 0,
+		      0, 0, BOOKE_PAGESZ_4K, 0),
+	SET_TLB_ENTRY(0, CONFIG_SYS_INIT_RAM_ADDR + 12 * 1024,
+		      CONFIG_SYS_INIT_RAM_ADDR + 12 * 1024,
+		      MAS3_SX|MAS3_SW|MAS3_SR, 0,
+		      0, 0, BOOKE_PAGESZ_4K, 0),
+
+	/*
+	 * TLB 0:	256M	Non-cacheable, guarded
+	 * 0xf0000000	256M	LBC (FLASH included)
+	 * Out of reset this entry is only 4K.
+	 */
+	SET_TLB_ENTRY(1, CONFIG_SYS_LBC_OPTION_BASE,
+		      CONFIG_SYS_LBC_OPTION_BASE_PHYS,
+		      MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
+		      0, 0, BOOKE_PAGESZ_256M, 1),
+
+	/*
+	 * TLB 1:	1M	Non-cacheable, guarded
+	 * 0xe000_0000	1M	CCSRBAR
+	 */
+	SET_TLB_ENTRY(1, CONFIG_SYS_CCSRBAR, CONFIG_SYS_CCSRBAR_PHYS,
+		      MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
+		      0, 1, BOOKE_PAGESZ_1M, 1),
+
+#ifdef CONFIG_SYS_SRIO1_MEM_PHYS
+	/*
+	 * TLB 2:       256M    Non-cacheable, guarded
+	 */
+	SET_TLB_ENTRY(1, CONFIG_SYS_SRIO1_MEM_VIRT, CONFIG_SYS_SRIO1_MEM_PHYS,
+		      MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
+		      0, 2, BOOKE_PAGESZ_256M, 1),
+
+	/*
+	 * TLB 3:       256M    Non-cacheable, guarded
+	 */
+	SET_TLB_ENTRY(1, CONFIG_SYS_SRIO1_MEM_VIRT + 0x10000000,
+		      CONFIG_SYS_SRIO1_MEM_PHYS + 0x10000000,
+		      MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
+		      0, 3, BOOKE_PAGESZ_256M, 1),
+
+#endif
+};
+
+int num_tlb_entries = ARRAY_SIZE(tlb_table);
diff --git a/board/mercury/mpq101/u-boot.lds b/board/mercury/mpq101/u-boot.lds
new file mode 100644
index 0000000000..4f4dda57b9
--- /dev/null
+++ b/board/mercury/mpq101/u-boot.lds
@@ -0,0 +1,132 @@
+/*
+ * Copyright 2007-2009 Freescale Semiconductor, Inc.
+ *
+ * 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
+ */
+
+#ifndef RESET_VECTOR_ADDRESS
+#define RESET_VECTOR_ADDRESS	0xfffffffc
+#endif
+
+#include <config.h>
+
+OUTPUT_ARCH(powerpc)
+
+PHDRS
+{
+  text PT_LOAD;
+  bss PT_LOAD;
+}
+
+SECTIONS
+{
+  /* Read-only sections, merged into text segment: */
+  . = + SIZEOF_HEADERS;
+  .interp : { *(.interp) }
+  /* To simplify mass deployment, environment precedes the monitor text in the
+   * same flash sector.
+   */
+  .ppcenv CONFIG_ENV_ADDR : { common/env_embedded.o (.ppcenv) }
+  .text      :
+  {
+    *(.text*)
+   } :text
+    _etext = .;
+    PROVIDE (etext = .);
+    .rodata    :
+   {
+    *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*)))
+  } :text
+
+  /* Read-write section, merged into data segment: */
+  . = (. + 0x00FF) & 0xFFFFFF00;
+  _erotext = .;
+  PROVIDE (erotext = .);
+  .reloc   :
+  {
+    _GOT2_TABLE_ = .;
+    KEEP(*(.got2))
+    KEEP(*(.got))
+    PROVIDE(_GLOBAL_OFFSET_TABLE_ = . + 4);
+    _FIXUP_TABLE_ = .;
+    KEEP(*(.fixup))
+  }
+  __got2_entries = ((_GLOBAL_OFFSET_TABLE_ - _GOT2_TABLE_) >> 2) - 1;
+  __fixup_entries = (. - _FIXUP_TABLE_) >> 2;
+
+  .data    :
+  {
+    *(.data*)
+    *(.sdata*)
+  }
+  _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 = .;
+
+  .bootpg RESET_VECTOR_ADDRESS - 0xffc :
+  {
+    arch/powerpc/cpu/mpc85xx/start.o	(.bootpg)
+  } :text = 0xffff
+
+  .resetvec RESET_VECTOR_ADDRESS :
+  {
+    KEEP(*(.resetvec))
+  } :text = 0xffff
+
+  . = RESET_VECTOR_ADDRESS + 0x4;
+
+  /*
+   * Make sure that the bss segment isn't linked at 0x0, otherwise its
+   * address won't be updated during relocation fixups.  Note that
+   * this is a temporary fix.  Code to dynamically the fixup the bss
+   * location will be added in the future.  When the bss relocation
+   * fixup code is present this workaround should be removed.
+   */
+#if (RESET_VECTOR_ADDRESS == 0xfffffffc)
+  . |= 0x10;
+#endif
+
+  __bss_start = .;
+  .bss (NOLOAD)       :
+  {
+   *(.sbss*)
+   *(.bss*)
+   *(COMMON)
+  } :bss
+
+  . = ALIGN(4);
+  _end = . ;
+  PROVIDE (end = .);
+}