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kernel: mtd: bcm-wfi: add cferam name support

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Some devices rename cferam bootloader using specific patterns and don't follow
broadcom standards for renaming cferam files. This requires supporting
different cferam file names.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
(cherry picked from commit 8813edd8d9)
This commit is contained in:
Álvaro Fernández Rojas 2023-06-14 23:21:34 +02:00
parent 17f6001853
commit e908856c43
1 changed files with 14 additions and 2 deletions
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16
target/linux/generic/files/drivers/mtd/mtdsplit/mtdsplit_bcm_wfi.c
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@ -31,6 +31,7 @@
#define CFERAM_NAME "cferam"
#define CFERAM_NAME_LEN (sizeof(CFERAM_NAME) - 1)
#define CFERAM_NAME_MAX_LEN 32
#define KERNEL_NAME "vmlinux.lz"
#define KERNEL_NAME_LEN (sizeof(KERNEL_NAME) - 1)
#define OPENWRT_NAME "1-openwrt"
@ -157,17 +158,28 @@ static int parse_bcm_wfi(struct mtd_info *master,
const struct mtd_partition **pparts,
uint8_t *buf, loff_t off, loff_t size, bool cfe_part)
{
struct device_node *mtd_node;
struct mtd_partition *parts;
loff_t cfe_off, kernel_off, rootfs_off;
unsigned int num_parts = BCM_WFI_PARTS, cur_part = 0;
const char *cferam_name = CFERAM_NAME;
size_t cferam_name_len;
int ret;
mtd_node = mtd_get_of_node(master);
if (mtd_node)
of_property_read_string(mtd_node, "brcm,cferam", &cferam_name);
cferam_name_len = strnlen(cferam_name, CFERAM_NAME_MAX_LEN);
if (cferam_name_len > 0)
cferam_name_len--;
if (cfe_part) {
num_parts++;
cfe_off = off;
ret = jffs2_find_file(master, buf, CFERAM_NAME,
CFERAM_NAME_LEN, &cfe_off,
ret = jffs2_find_file(master, buf, cferam_name,
cferam_name_len, &cfe_off,
size - (cfe_off - off), NULL, NULL);
if (ret)
return ret;