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mach-k3: add carveouts for TFA and optee

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K3 platforms have reserved memory regions for TFA and OPTEE which should
be unmapped for U-Boot. While other "no-map" memory regions like the
memory pools for remote cores should not be unmapped to allow U-Boot to
load firmware during remoteproc.

Therefore this patch adds the necessary fdt fixups to properly set the
load address for TFA/OPTEE and unmaps both by mmu_unmap_reserved_mem.

Reviewed-by: Dhruva Gole <d-gole@ti.com>
Signed-off-by: Anshul Dalal <anshuld@ti.com>
Tested-by: Wadim Egorov <w.egorov@phytec.de>
This commit is contained in:
Anshul Dalal
2025-10-17 18:45:32 +05:30
committed by Tom Rini
parent 859f68ed2e
commit 4f5285f0e6
1 changed files with 26 additions and 0 deletions
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26
arch/arm/mach-k3/common.c
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@@ -31,6 +31,7 @@
#include <dm/uclass-internal.h>
#include <dm/device-internal.h>
#include <asm/armv8/mmu.h>
#include <mach/k3-common-fdt.h>
#include <mach/k3-ddr.h>
#define PROC_BOOT_CTRL_FLAG_R5_CORE_HALT 0x00000001
@@ -263,6 +264,7 @@ void board_prep_linux(struct bootm_headers *images)
void enable_caches(void)
{
void *fdt = (void *)gd->fdt_blob;
int ret;
ret = mem_map_from_dram_banks(K3_MEM_MAP_FIRST_BANK_IDX, K3_MEM_MAP_LEN,
@@ -273,6 +275,30 @@ void enable_caches(void)
mmu_setup();
if (CONFIG_K3_ATF_LOAD_ADDR >= CFG_SYS_SDRAM_BASE) {
ret = fdt_fixup_reserved(fdt, "tfa", CONFIG_K3_ATF_LOAD_ADDR,
0x80000);
if (ret)
printf("%s: Failed to perform tfa fixups (%s)\n",
__func__, fdt_strerror(ret));
ret = mmu_unmap_reserved_mem("tfa", true);
if (ret)
printf("%s: Failed to unmap tfa reserved mem (%d)\n",
__func__, ret);
}
if (CONFIG_K3_OPTEE_LOAD_ADDR >= CFG_SYS_SDRAM_BASE) {
ret = fdt_fixup_reserved(fdt, "optee",
CONFIG_K3_OPTEE_LOAD_ADDR, 0x1800000);
if (ret)
printf("%s: Failed to perform optee fixups (%s)\n",
__func__, fdt_strerror(ret));
ret = mmu_unmap_reserved_mem("optee", true);
if (ret)
printf("%s: Failed to unmap optee reserved mem (%d)\n",
__func__, ret);
}
icache_enable();
dcache_enable();
}