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lib: utils/fdt: Add fdt_get_address_rw() helper

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Help tracking the lifecycle of the FDT blob by indicating which parts of
the firmware modify it, and thus invalidate any previously-obtained
offsets or pointers to data inside the blob.

Signed-off-by: Samuel Holland <samuel.holland@sifive.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Samuel Holland
2024-07-30 21:58:57 -07:00
committed by Anup Patel
parent c36801841e
commit 8cb7f89d7c
6 changed files with 13 additions and 8 deletions
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4
platform/generic/platform.c
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@@ -243,7 +243,7 @@ static int generic_early_init(bool cold_boot)
static int generic_final_init(bool cold_boot)
{
void *fdt = fdt_get_address();
void *fdt = fdt_get_address_rw();
int rc;
if (generic_plat && generic_plat->final_init) {
@@ -314,7 +314,7 @@ static int generic_extensions_init(struct sbi_hart_features *hfeatures)
static int generic_domains_init(void)
{
void *fdt = fdt_get_address();
const void *fdt = fdt_get_address();
int offset, ret;
ret = fdt_domains_populate(fdt);