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board: ns3: limit U-boot relocation within 16MB memory

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By default relocation happens to a higher address of DDR,
i.e, DDR start + DDR size.

U-Boot shall be used to collect the ramdump.
Restrict U-Boot to use only the 16MB memory, so that this
memory can be reserved. Limit relocation to happen within
16MB memory, start 0xFF00_0000 and end 0x1_0000_0000

Signed-off-by: Bharat Kumar Reddy Gooty <bharat.gooty@broadcom.com>
Signed-off-by: Rayagonda Kokatanur <rayagonda.kokatanur@broadcom.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Bharat Kumar Reddy Gooty 2020-07-15 22:49:05 +05:30 committed by Tom Rini
parent c8b98482d8
commit 53a3e8d469
1 changed files with 19 additions and 3 deletions
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22
board/broadcom/bcmns3/ns3.c
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@ -144,6 +144,11 @@ static int mem_info_parse_fixup(void *fdt)
int board_init(void)
{
/* Setup memory using "memory" node from DTB */
if (fdtdec_setup_mem_size_base() != 0)
return -EINVAL;
fdtdec_setup_memory_banksize();
if (bl33_info->version != BL33_INFO_VERSION)
printf("*** warning: ATF BL31 and U-Boot not in sync! ***\n");
@ -157,19 +162,30 @@ int board_late_init(void)
int dram_init(void)
{
if (fdtdec_setup_mem_size_base() != 0)
return -EINVAL;
/*
* Mark ram base as the last 16MB of 2GB DDR, which is 0xFF00_0000.
* So that relocation happens with in the last 16MB memory.
*/
gd->ram_base = (phys_size_t)(BCM_NS3_MEM_END - SZ_16M);
gd->ram_size = (unsigned long)SZ_16M;
return 0;
}
int dram_init_banksize(void)
{
fdtdec_setup_memory_banksize();
gd->bd->bi_dram[0].start = (BCM_NS3_MEM_END - SZ_16M);
gd->bd->bi_dram[0].size = SZ_16M;
return 0;
}
/* Limit RAM used by U-Boot to the DDR first bank End region */
ulong board_get_usable_ram_top(ulong total_size)
{
return BCM_NS3_MEM_END;
}
void reset_cpu(ulong level)
{
u32 reset_level, strap_val;