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Merge "fix(xilinx): warn if reserved memory pre-exists in DT" into integration

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Yann Gautier 2024-09-17 14:34:17 +02:00 • committed by TrustedFirmware Code Review
commit a16dad0b22
1 changed files with 24 additions and 5 deletions
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29
plat/xilinx/common/plat_fdt.c
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@ -86,6 +86,18 @@ static int remove_mmap_dynamic_region(uintptr_t base_va, size_t size)
}
#endif
#if defined(XILINX_OF_BOARD_DTB_ADDR)
static int check_fdt_reserved_memory(void *dtb, const char *node_name)
{
int offset = fdt_path_offset(dtb, "/reserved-memory");
if (offset >= 0) {
offset = fdt_subnode_offset(dtb, offset, node_name);
}
return offset;
}
#endif
void prepare_dtb(void)
{
#if defined(XILINX_OF_BOARD_DTB_ADDR)
@ -112,12 +124,19 @@ void prepare_dtb(void)
WARN("Failed to add PSCI cpu enable methods in DT\n");
}
/* Reserve memory used by Trusted Firmware. */
ret = fdt_add_reserved_memory(dtb, "tf-a",
BL31_BASE,
BL31_LIMIT - BL31_BASE);
/* Check reserved memory set in DT*/
ret = check_fdt_reserved_memory(dtb, "tf-a");
if (ret < 0) {
WARN("Failed to add reserved memory nodes for BL31 to DT.\n");
/* Reserve memory used by Trusted Firmware. */
ret = fdt_add_reserved_memory(dtb, "tf-a",
BL31_BASE,
BL31_LIMIT - BL31_BASE);
if (ret < 0) {
WARN("Failed to add reserved memory nodes for BL31 to DT.\n");
}
} else {
WARN("Reserved memory pre-exists in DT.\n");
}
ret = fdt_pack(dtb);