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SPEAr: Fix ARM relocation support 

While the u-boot code is running from the flash, it is essential that no access
is made to the bss segment. This is due to the fact that .rel.dyn and .bss areas
overlap and former contains information used in relocation. In SPEAr, this was
not taken into consideration. As a result, while the relocation wasn't complete,
dram_init populated an uninitialized global variable resulting in corruption of
.rel.dyn area, which resulted in u-boot crash.

This commit fixes this problem by removing code that accesses bss segment

Signed-off-by: Amit Virdi <amit.virdi@st.com>
Acked-by: Stefan Roese <sr@denx.de>
Signed-off-by: Stefan Roese <sr@denx.de>
This commit is contained in:
Amit Virdi 2012-05-07 13:06:39 +05:30 committed by Albert ARIBAUD
parent 9264077635
commit 5cca72f8b3
1 changed files with 1 additions and 19 deletions
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20
board/spear/common/spr_misc.c
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@ -40,27 +40,9 @@ static struct chip_data chip_data;
int dram_init(void)
{
struct xloader_table *xloader_tb =
(struct xloader_table *)XLOADER_TABLE_ADDRESS;
struct xloader_table_1_1 *table_1_1;
struct xloader_table_1_2 *table_1_2;
struct chip_data *chip = &chip_data;
/* Store complete RAM size and return */
gd->ram_size = get_ram_size(PHYS_SDRAM_1, PHYS_SDRAM_1_MAXSIZE);
if (XLOADER_TABLE_VERSION_1_1 == xloader_tb->table_version) {
table_1_1 = &xloader_tb->table.table_1_1;
chip->dramfreq = table_1_1->ddrfreq;
chip->dramtype = table_1_1->ddrtype;
} else if (XLOADER_TABLE_VERSION_1_2 == xloader_tb->table_version) {
table_1_2 = &xloader_tb->table.table_1_2;
chip->dramfreq = table_1_2->ddrfreq;
chip->dramtype = table_1_2->ddrtype;
} else {
chip->dramfreq = -1;
}
return 0;
}