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fw_loader: Prefix the FW loader variables with the script prefix

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Add the script name as a prefix to fw_addr and fw_size variables
to make sure they are always unique and won't easily conflict with
user variables.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
This commit is contained in:
Marek Vasut
2025-09-22 13:48:28 +02:00
committed by Tom Rini
parent 8aa57934e5
commit 50fc929386
1 changed files with 10 additions and 4 deletions
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14
lib/fw_loader.c
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@@ -13,6 +13,8 @@ int request_firmware_into_buf_via_script(void *buf, size_t max_size,
const char *script_name,
size_t *retsize)
{
char env_addr[CONFIG_SYS_CBSIZE] = { 0 };
char env_size[CONFIG_SYS_CBSIZE] = { 0 };
char *args[2] = { "run", (char *)script_name };
int ret, repeatable;
ulong addr, size;
@@ -28,13 +30,17 @@ int request_firmware_into_buf_via_script(void *buf, size_t max_size,
return -EINVAL;
}
/* Prefix the FW loader variables with the script prefix */
snprintf(env_addr, sizeof(env_addr), "%s_addr", script_name);
snprintf(env_size, sizeof(env_size), "%s_size", script_name);
/* Find out where the firmware got loaded and how long it is */
addr = env_get_hex("fw_addr", 0);
size = env_get_hex("fw_size", 0);
addr = env_get_hex(env_addr, 0);
size = env_get_hex(env_size, 0);
/* Clear the variables set by the firmware loading script */
env_set("fw_addr", NULL);
env_set("fw_size", NULL);
env_set(env_addr, NULL);
env_set(env_size, NULL);
if (!addr || !size) {
log_err("Firmware address (0x%lx) or size (0x%lx) are invalid.\n",