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kernel: mtdsplit: bcm_wfi: add sercomm support

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SERCOMM creates separates partitions for cferam.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
This commit is contained in:
Álvaro Fernández Rojas 2020-05-19 13:28:06 +02:00
parent f996377a26
commit 5d3bb7ea9a
1 changed files with 47 additions and 23 deletions
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60
target/linux/generic/files/drivers/mtd/mtdsplit/mtdsplit_bcm_wfi.c
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@ -24,7 +24,7 @@
#include "mtdsplit.h" #include "mtdsplit.h"
#define BCM_WFI_PARTS 4 #define BCM_WFI_PARTS 3
#define CFERAM_NAME "cferam" #define CFERAM_NAME "cferam"
#define CFERAM_NAME_LEN (sizeof(CFERAM_NAME) - 1) #define CFERAM_NAME_LEN (sizeof(CFERAM_NAME) - 1)
@ -126,7 +126,10 @@ static int mtdsplit_parse_bcm_wfi(struct mtd_info *master,
struct mtd_part_parser_data *data) struct mtd_part_parser_data *data)
{ {
struct mtd_partition *parts; struct mtd_partition *parts;
struct device_node *mtd_node;
loff_t cfe_off, kernel_off, rootfs_off; loff_t cfe_off, kernel_off, rootfs_off;
bool cfe_part = true;
unsigned int num_parts = BCM_WFI_PARTS, cur_part = 0;
uint8_t *buf; uint8_t *buf;
int ret; int ret;
@ -134,15 +137,29 @@ static int mtdsplit_parse_bcm_wfi(struct mtd_info *master,
if (!buf) if (!buf)
return -ENOMEM; return -ENOMEM;
mtd_node = mtd_get_of_node(master);
if (!mtd_node)
return -EINVAL;
if (of_device_is_compatible(mtd_node, "brcm,wfi-sercomm"))
cfe_part = false;
if (cfe_part) {
num_parts++;
cfe_off = 0; cfe_off = 0;
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);
if (ret) { if (ret) {
kfree(buf); kfree(buf);
return ret; return ret;
} }
kernel_off = cfe_off + master->erasesize; kernel_off = cfe_off + master->erasesize;
} else {
kernel_off = 0;
}
ret = jffs2_find_file(master, buf, KERNEL_NAME, KERNEL_NAME_LEN, ret = jffs2_find_file(master, buf, KERNEL_NAME, KERNEL_NAME_LEN,
&kernel_off); &kernel_off);
kfree(buf); kfree(buf);
@ -154,34 +171,41 @@ static int mtdsplit_parse_bcm_wfi(struct mtd_info *master,
if (ret) if (ret)
return ret; return ret;
parts = kzalloc(BCM_WFI_PARTS * sizeof(*parts), GFP_KERNEL); parts = kzalloc(num_parts * sizeof(*parts), GFP_KERNEL);
if (!parts) if (!parts)
return -ENOMEM; return -ENOMEM;
parts[0].name = "cferam"; if (cfe_part) {
parts[0].mask_flags = MTD_WRITEABLE; parts[cur_part].name = "cferam";
parts[0].offset = 0; parts[cur_part].mask_flags = MTD_WRITEABLE;
parts[0].size = kernel_off; parts[cur_part].offset = 0;
parts[cur_part].size = kernel_off;
cur_part++;
}
parts[1].name = "firmware"; parts[cur_part].name = "firmware";
parts[1].offset = kernel_off; parts[cur_part].offset = kernel_off;
parts[1].size = master->size - kernel_off; parts[cur_part].size = master->size - kernel_off;
cur_part++;
parts[2].name = KERNEL_PART_NAME; parts[cur_part].name = KERNEL_PART_NAME;
parts[2].offset = kernel_off; parts[cur_part].offset = kernel_off;
parts[2].size = rootfs_off - kernel_off; parts[cur_part].size = rootfs_off - kernel_off;
cur_part++;
parts[3].name = UBI_PART_NAME; parts[cur_part].name = UBI_PART_NAME;
parts[3].offset = rootfs_off; parts[cur_part].offset = rootfs_off;
parts[3].size = master->size - rootfs_off; parts[cur_part].size = master->size - rootfs_off;
cur_part++;
*pparts = parts; *pparts = parts;
return BCM_WFI_PARTS; return num_parts;
} }
static const struct of_device_id mtdsplit_fit_of_match_table[] = { static const struct of_device_id mtdsplit_fit_of_match_table[] = {
{ .compatible = "brcm,wfi" }, { .compatible = "brcm,wfi" },
{ .compatible = "brcm,wfi-sercomm" },
{ }, { },
}; };