spl_nand overwrote BSS section because it reads a whole block everytime. Now
loads the block to spare area and just copy the needed junk to destination.
Whole block read is necessary for ecc check!
Signed-off-by: Simon Schwarz <simonschwarz...@gmail.com>
---
V2 changes:
nothing
---
arch/arm/cpu/armv7/omap-common/spl_nand.c | 21 ++++++++++++++++++---
1 files changed, 18 insertions(+), 3 deletions(-)
diff --git a/arch/arm/cpu/armv7/omap-common/spl_nand.c
b/arch/arm/cpu/armv7/omap-common/spl_nand.c
index 06254b2..408892f 100644
--- a/arch/arm/cpu/armv7/omap-common/spl_nand.c
+++ b/arch/arm/cpu/armv7/omap-common/spl_nand.c
@@ -24,6 +24,7 @@
#include <asm/u-boot.h>
#include <asm/utils.h>
#include <asm/arch/sys_proto.h>
+#include <asm/io.h>
#include <nand.h>
#include <timestamp_autogenerated.h>
#include <version_autogenerated.h>
@@ -33,6 +34,7 @@
void spl_nand_load_image(void)
{
struct image_header *header;
+ int *src, *dst;
switch (omap_boot_mode()) {
case NAND_MODE_HW_ECC:
debug("spl: nand - using hw ecc\n");
@@ -49,16 +51,29 @@ void spl_nand_load_image(void)
#ifdef CONFIG_SPL_OS_BOOT
if (!spl_uboot_key()) {
/* load parameter image */
- nand_spl_load_image(CONFIG_CMD_SAVEBP_NAND_OFS ,
+ /* load to temp position since nand_spl_load_image reads
+ * a whole block which is typically larger than
+ * CONFIG_CMD_SAVEBP_WRITE_SIZE therefore may overwrite
+ * following sections like BSS */
+ nand_spl_load_image(CONFIG_CMD_SAVEBP_NAND_OFS,
CONFIG_CMD_SAVEBP_WRITE_SIZE,
- (void *)CONFIG_SYS_SPL_ARGS_ADDR);
+ (void *)CONFIG_SYS_TEXT_BASE);
+ /* copy to destintion */
+ for (dst = (int *)CONFIG_SYS_SPL_ARGS_ADDR,
+ src = (int *)CONFIG_SYS_TEXT_BASE;
+ src < (int *)(CONFIG_SYS_TEXT_BASE +
+ CONFIG_CMD_SAVEBP_WRITE_SIZE);
+ src++, dst++) {
+ writel(readl(src), dst);
+ }
/* load linux */
nand_spl_load_image(CONFIG_SYS_NAND_SPL_KERNEL_OFFS,
CONFIG_SYS_NAND_PAGE_SIZE, (void *)header);
spl_parse_image_header(header);
nand_spl_load_image(CONFIG_SYS_NAND_SPL_KERNEL_OFFS,
- spl_image.size, (void *)spl_image.load_addr);
+ spl_image.size,
+ (void *)spl_image.load_addr - sizeof(header));
} else
#endif
{
--
1.7.4.1
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