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arm64: versal: Do not place u-boot to reserved memory location 

Versal can also have reserved space in DT which u-boot has to avoid to
placing self to that location. The same change was done in ZynqMP by commit
ce39ee28ec ("zynqmp: Do not place u-boot to reserved memory location")
and also for microblaze by commit d7b5cc89d3 ("microblaze: Do not place
u-boot to reserved memory location").

The patch was tested by adding reserved-memory node to DT and check via
bdinfo back.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Link: https://lore.kernel.org/r/15426fa6d64835dd23c5c8c12bbfc97306fb6098.1647527129.git.michal.simek@xilinx.com
This commit is contained in:
Michal Simek 2022-03-17 15:25:31 +01:00
parent f307c688ea
commit f66d0b5346
1 changed files with 20 additions and 0 deletions
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20
board/xilinx/versal/board.c
View File

@ -9,6 +9,7 @@
#include <env.h>
#include <fdtdec.h>
#include <init.h>
#include <image.h>
#include <env_internal.h>
#include <log.h>
#include <malloc.h>
@ -249,6 +250,25 @@ int dram_init(void)
return 0;
}
ulong board_get_usable_ram_top(ulong total_size)
{
phys_size_t size;
phys_addr_t reg;
struct lmb lmb;
/* found enough not-reserved memory to relocated U-Boot */
lmb_init(&lmb);
lmb_add(&lmb, gd->ram_base, gd->ram_size);
boot_fdt_add_mem_rsv_regions(&lmb, (void *)gd->fdt_blob);
size = ALIGN(CONFIG_SYS_MALLOC_LEN + total_size, MMU_SECTION_SIZE);
reg = lmb_alloc(&lmb, size, MMU_SECTION_SIZE);
if (!reg)
reg = gd->ram_top - size;
return reg + size;
}
void reset_cpu(void)
{
}