[U-Boot] [PATCH v6 05/11] arm, davinci: add support for new spl framework
Heiko Schocher
hs at denx.de
Wed Nov 2 07:00:29 CET 2011
Signed-off-by: Heiko Schocher <hs at denx.de>
Cc: Albert ARIBAUD <albert.u.boot at aribaud.net>
Cc: Sandeep Paulraj <s-paulraj at ti.com>
Cc: Scott Wood <scottwood at freescale.com>
---
change for v6:
- moved arch/arm/cpu/arm926ejs/davinci/spl_nand.c to
drivers/mtd/nand/nand_spl_load.c as Scoot Wood suggested.
compiled through CONFIG_SPL_NAND_LOAD define
Makefile | 8 +++-
arch/arm/cpu/arm926ejs/davinci/Makefile | 5 ++
arch/arm/cpu/arm926ejs/davinci/spl.c | 63 +++++++++++++++++++++++++++++++
arch/arm/cpu/arm926ejs/start.S | 25 ++++++++++++-
doc/README.SPL | 1 +
drivers/mtd/nand/Makefile | 3 +
drivers/mtd/nand/nand_spl_load.c | 56 +++++++++++++++++++++++++++
7 files changed, 158 insertions(+), 3 deletions(-)
create mode 100644 arch/arm/cpu/arm926ejs/davinci/spl.c
create mode 100644 drivers/mtd/nand/nand_spl_load.c
diff --git a/Makefile b/Makefile
index 9ef33f9..46a6e78 100644
--- a/Makefile
+++ b/Makefile
@@ -415,9 +415,13 @@ $(obj)u-boot.sha1: $(obj)u-boot.bin
$(obj)u-boot.dis: $(obj)u-boot
$(OBJDUMP) -d $< > $@
-$(obj)u-boot.ubl: $(obj)u-boot-nand.bin
+$(obj)u-boot.ubl: $(obj)spl/u-boot-spl.bin $(obj)u-boot.bin
+ $(OBJCOPY) ${OBJCFLAGS} --pad-to=$(PAD_TO) -O binary $(obj)spl/u-boot-spl $(obj)spl/u-boot-spl-pad.bin
+ cat $(obj)spl/u-boot-spl-pad.bin $(obj)u-boot.bin > $(obj)u-boot-ubl.bin
$(obj)tools/mkimage -n $(UBL_CONFIG) -T ublimage \
- -e $(CONFIG_SYS_TEXT_BASE) -d $< $@
+ -e $(CONFIG_SYS_TEXT_BASE) -d $(obj)u-boot-ubl.bin $(obj)u-boot.ubl
+ rm $(obj)u-boot-ubl.bin
+ rm $(obj)spl/u-boot-spl-pad.bin
ifeq ($(CONFIG_SANDBOX),y)
GEN_UBOOT = \
diff --git a/arch/arm/cpu/arm926ejs/davinci/Makefile b/arch/arm/cpu/arm926ejs/davinci/Makefile
index 0310957..98c7e55 100644
--- a/arch/arm/cpu/arm926ejs/davinci/Makefile
+++ b/arch/arm/cpu/arm926ejs/davinci/Makefile
@@ -35,6 +35,11 @@ COBJS-$(CONFIG_SOC_DM644X) += dm644x.o
COBJS-$(CONFIG_SOC_DM646X) += dm646x.o
COBJS-$(CONFIG_DRIVER_TI_EMAC) += lxt972.o dp83848.o et1011c.o ksz8873.o
+ifdef CONFIG_SPL_BUILD
+COBJS-y += spl.o
+COBJS-y += dm365_lowlevel.o
+endif
+
SOBJS = reset.o
ifndef CONFIG_SKIP_LOWLEVEL_INIT
diff --git a/arch/arm/cpu/arm926ejs/davinci/spl.c b/arch/arm/cpu/arm926ejs/davinci/spl.c
new file mode 100644
index 0000000..d9b9398
--- /dev/null
+++ b/arch/arm/cpu/arm926ejs/davinci/spl.c
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2011
+ * Heiko Schocher, DENX Software Engineering, hs at 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/u-boot.h>
+#include <asm/utils.h>
+#include <nand.h>
+#include <asm/arch/dm365_lowlevel.h>
+#include <ns16550.h>
+
+void puts(const char *str)
+{
+ while (*str)
+ putc(*str++);
+}
+
+void putc(char c)
+{
+ if (c == '\n')
+ NS16550_putc((NS16550_t)(CONFIG_SYS_NS16550_COM1), '\r');
+
+ NS16550_putc((NS16550_t)(CONFIG_SYS_NS16550_COM1), c);
+}
+
+inline void hang(void)
+{
+ puts("### ERROR ### Please RESET the board ###\n");
+ for (;;)
+ ;
+}
+
+void board_init_f(ulong dummy)
+{
+ dm36x_lowlevel_init(0);
+ relocate_code(CONFIG_SPL_STACK, NULL, CONFIG_SPL_TEXT_BASE);
+}
+
+void board_init_r(gd_t *id, ulong dummy)
+{
+
+ nand_init();
+ puts("Nand boot...\n");
+ nand_boot();
+}
diff --git a/arch/arm/cpu/arm926ejs/start.S b/arch/arm/cpu/arm926ejs/start.S
index 86a0dc2..339c5ed 100644
--- a/arch/arm/cpu/arm926ejs/start.S
+++ b/arch/arm/cpu/arm926ejs/start.S
@@ -126,7 +126,15 @@ _fiq:
.globl _TEXT_BASE
_TEXT_BASE:
+#ifdef CONFIG_NAND_SPL /* deprecated, use instead CONFIG_SPL_BUILD */
.word CONFIG_SYS_TEXT_BASE
+#else
+#ifdef CONFIG_SPL_BUILD
+ .word CONFIG_SPL_TEXT_BASE
+#else
+ .word CONFIG_SYS_TEXT_BASE
+#endif
+#endif
/*
* These are defined in the board-specific linker script.
@@ -192,7 +200,15 @@ reset:
/* Set stackpointer in internal RAM to call board_init_f */
call_board_init_f:
+#ifdef CONFIG_NAND_SPL /* deprecated, use instead CONFIG_SPL_BUILD */
+ ldr sp, =(CONFIG_SYS_INIT_SP_ADDR)
+#else
+#ifdef CONFIG_SPL_BUILD
+ ldr sp, =(CONFIG_SPL_STACK)
+#else
ldr sp, =(CONFIG_SYS_INIT_SP_ADDR)
+#endif
+#endif
bic sp, sp, #7 /* 8-byte alignment for ABI compliance */
ldr r0,=0x00000000
bl board_init_f
@@ -217,6 +233,7 @@ stack_setup:
mov sp, r4
adr r0, _start
+ sub r9, r6, r0 /* r9 <- relocation offset */
cmp r0, r6
beq clear_bss /* skip relocation */
mov r1, r6 /* r1 <- scratch for copy loop */
@@ -271,12 +288,17 @@ fixnext:
#endif
clear_bss:
-#ifndef CONFIG_SPL_BUILD
+#ifdef CONFIG_SPL_BUILD
+ /* No relocation for SPL */
+ ldr r0, =__bss_start
+ ldr r1, =__bss_end__
+#else
ldr r0, _bss_start_ofs
ldr r1, _bss_end_ofs
mov r4, r6 /* reloc addr */
add r0, r0, r4
add r1, r1, r4
+#endif
mov r2, #0x00000000 /* clear */
clbss_l:str r2, [r0] /* clear loop... */
@@ -284,6 +306,7 @@ clbss_l:str r2, [r0] /* clear loop... */
cmp r0, r1
bne clbss_l
+#ifndef CONFIG_SPL_BUILD
bl coloured_LED_init
bl red_led_on
#endif
diff --git a/doc/README.SPL b/doc/README.SPL
index b460e84..89d24a7 100644
--- a/doc/README.SPL
+++ b/doc/README.SPL
@@ -64,3 +64,4 @@ CONFIG_SPL_POWER_SUPPORT (drivers/power/libpower.o)
CONFIG_SPL_NAND_SUPPORT (drivers/mtd/nand/libnand.o)
CONFIG_SPL_DMA_SUPPORT (drivers/dma/libdma.o)
CONFIG_SPL_POST_MEM_SUPPORT (post/drivers/memory.o)
+CONFIG_SPL_NAND_LOAD (drivers/mtd/nand/nand_spl_load.o)
diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile
index 1eeba5c..28bd350 100644
--- a/drivers/mtd/nand/Makefile
+++ b/drivers/mtd/nand/Makefile
@@ -30,6 +30,9 @@ ifdef CONFIG_SPL_BUILD
ifdef CONFIG_SPL_NAND_SIMPLE
COBJS-y += nand_spl_simple.o
endif
+ifdef CONFIG_SPL_NAND_LOAD
+COBJS-y += nand_spl_load.o
+endif
else
COBJS-y += nand.o
COBJS-y += nand_bbt.o
diff --git a/drivers/mtd/nand/nand_spl_load.c b/drivers/mtd/nand/nand_spl_load.c
new file mode 100644
index 0000000..ae8d5ac
--- /dev/null
+++ b/drivers/mtd/nand/nand_spl_load.c
@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2011
+ * Heiko Schocher, DENX Software Engineering, hs at 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 <common.h>
+#include <nand.h>
+
+/*
+ * The main entry for NAND booting. It's necessary that SDRAM is already
+ * configured and available since this code loads the main U-Boot image
+ * from NAND into SDRAM and starts it from there.
+ */
+void nand_boot(void)
+{
+ int ret;
+ __attribute__((noreturn)) void (*uboot)(void);
+
+ /*
+ * Load U-Boot image from NAND into RAM
+ */
+ ret = nand_spl_load_image(CONFIG_SYS_NAND_U_BOOT_OFFS,
+ CONFIG_SYS_NAND_U_BOOT_SIZE,
+ (void *)CONFIG_SYS_NAND_U_BOOT_DST);
+
+#ifdef CONFIG_NAND_ENV_DST
+ ret = nand_spl_load_image(CONFIG_ENV_OFFSET, CONFIG_ENV_SIZE,
+ (void *)CONFIG_NAND_ENV_DST);
+
+#ifdef CONFIG_ENV_OFFSET_REDUND
+ ret = nand_spl_load_image(CONFIG_ENV_OFFSET_REDUND, CONFIG_ENV_SIZE,
+ (void *)CONFIG_NAND_ENV_DST + CONFIG_ENV_SIZE);
+#endif
+#endif
+
+ /*
+ * Jump to U-Boot image
+ */
+ uboot = (void *)CONFIG_SYS_NAND_U_BOOT_START;
+ (*uboot)();
+}
--
1.7.6.4
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