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| author | Michal Simek <michal.simek@xilinx.com> | 2021-05-31 12:03:19 +0300 |
|---|---|---|
| committer | Michal Simek <michal.simek@xilinx.com> | 2021-06-23 10:48:35 +0300 |
| commit | ce39ee28ec31b04c5c4e50d57a852ef8c1b2b26f (patch) | |
| tree | 199779ef182d28413687beaaf008dea6648207c2 /board/xilinx | |
| parent | 43ef4c82fe4d9a4790b358b82de336f4dd5bf681 (diff) | |
| download | u-boot-ce39ee28ec31b04c5c4e50d57a852ef8c1b2b26f.tar.xz | |
zynqmp: Do not place u-boot to reserved memory location
TF-A and SecureOS can allocate the part of DDR for self but U-Boot is not
handling this configuration that the part of memory is reserved and
shouldn't be used by U-Boot. That's why read all reserved memory locations
and don't use it.
The code was taken from commit 4a1b975dac02 ("board: stm32mp1: reserve
memory for OP-TEE in device tree") and commit 1419e5b5167e ("stm32mp:
update MMU config before the relocation") which is used by stm32 and does
the job properly.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Diffstat (limited to 'board/xilinx')
| -rw-r--r-- | board/xilinx/zynqmp/zynqmp.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/board/xilinx/zynqmp/zynqmp.c b/board/xilinx/zynqmp/zynqmp.c index 208eadef45..7177c5a5a8 100644 --- a/board/xilinx/zynqmp/zynqmp.c +++ b/board/xilinx/zynqmp/zynqmp.c @@ -11,6 +11,8 @@ #include <env.h> #include <env_internal.h> #include <init.h> +#include <image.h> +#include <lmb.h> #include <log.h> #include <net.h> #include <sata.h> @@ -453,6 +455,25 @@ 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; +} #else int dram_init_banksize(void) { |