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brcm47xx: fix partition layout on SimpleShare devices. 

The flash driver code should be cleaned up and the broad detection code should be placed into arch code and used here.

This fixes #9323

Thank you Will Holmes for the patch.

SVN-Revision: 27005
owl
Hauke Mehrtens 2011-05-25 17:46:34 +00:00
parent 2629de3ef2
commit 06166b01dd
1 changed files with 66 additions and 21 deletions
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79
target/linux/brcm47xx/files/drivers/mtd/maps/bcm47xx-flash.c
View File

@ -90,6 +90,7 @@ struct trx_header {
#define ROUTER_NETGEAR_WNR834B 2
#define ROUTER_NETGEAR_WNDR3300 3
#define ROUTER_NETGEAR_WNR3500L 4
#define ROUTER_SIMPLETECH_SIMPLESHARE 5
#ifdef CONFIG_SSB
extern struct ssb_bus ssb_bcm47xx;
@ -126,6 +127,7 @@ static struct mtd_partition bcm47xx_parts[] = {
{ name: "linux", offset: 0, size: 0, },
{ name: "rootfs", offset: 0, size: 0, },
{ name: "nvram", offset: 0, size: 0, },
{ name: NULL, }, /* Used to create custom partitons with the function get_router() */
{ name: NULL, },
};
@ -340,7 +342,7 @@ find_root(struct mtd_info *mtd, size_t size, struct mtd_partition *part)
return -1;
found:
printk(KERN_NOTICE"TRX offset : %lx\n", trxoff);
printk(KERN_NOTICE"TRX offset : %x\n", trxoff);
if (part->size == 0)
return 0;
@ -397,6 +399,7 @@ static int get_router(void)
u32 boardflags = 0;
u16 sdram_init = 0;
u16 cardbus = 0;
u16 strev = 0;
if (nvram_getenv("boardnum", buf, sizeof(buf)) >= 0)
boardnum = simple_strtoul(buf, NULL, 0);
@ -410,6 +413,8 @@ static int get_router(void)
sdram_init = simple_strtoul(buf, NULL, 0);
if (nvram_getenv("cardbus", buf, sizeof(buf)) >= 0)
cardbus = simple_strtoul(buf, NULL, 0);
if (nvram_getenv("st_rev", buf, sizeof(buf)) >= 0)
strev = simple_strtoul(buf, NULL, 0);
if ((boardnum == 8 || boardnum == 01)
&& boardtype == 0x0472 && cardbus == 1) {
@ -438,6 +443,14 @@ static int get_router(void)
return ROUTER_NETGEAR_WNR3500L;
}
if (boardtype == 0x042f
&& boardrev == 0x10
&& boardflags == 0
&& strev == 0x11) {
/* Simpletech Simpleshare */
return ROUTER_SIMPLETECH_SIMPLESHARE;
}
return 0;
}
@ -450,19 +463,7 @@ init_mtd_partitions(struct mtd_info *mtd, size_t size)
* part from our mapping to prevent overwriting len/checksum on e.g.
* Netgear WGR614v8/L/WW
*/
int board_data_size = 0;
switch (get_router()) {
case ROUTER_NETGEAR_WGR614L:
case ROUTER_NETGEAR_WNR834B:
case ROUTER_NETGEAR_WNDR3300:
case ROUTER_NETGEAR_WNR3500L:
/* Netgear: checksum is @ 0x003AFFF8 for 4M flash or checksum
* is @ 0x007AFFF8 for 8M flash
*/
board_data_size = 4 * mtd->erasesize;
break;
}
int custom_data_size = 0;
if ((cfe_size = find_cfe_size(mtd,size)) < 0)
return NULL;
@ -473,8 +474,46 @@ init_mtd_partitions(struct mtd_info *mtd, size_t size)
/* nvram */
if (cfe_size != 384 * 1024) {
switch (get_router()) {
case ROUTER_NETGEAR_WGR614L:
case ROUTER_NETGEAR_WNR834B:
case ROUTER_NETGEAR_WNDR3300:
case ROUTER_NETGEAR_WNR3500L:
/* Netgear: checksum is @ 0x003AFFF8 for 4M flash or checksum
* is @ 0x007AFFF8 for 8M flash
*/
custom_data_size = mtd->erasesize;
bcm47xx_parts[3].offset = size - ROUNDUP(NVRAM_SPACE, mtd->erasesize);
bcm47xx_parts[3].size = ROUNDUP(NVRAM_SPACE, mtd->erasesize);
/* Place CFE board_data into a partition */
bcm47xx_parts[4].name = "board_data";
bcm47xx_parts[4].offset = bcm47xx_parts[3].offset - custom_data_size;
bcm47xx_parts[4].size = custom_data_size;
break;
case ROUTER_SIMPLETECH_SIMPLESHARE:
/* Fixup Simpletech Simple share nvram */
printk("Setting up simpletech nvram\n");
custom_data_size = mtd->erasesize;
bcm47xx_parts[3].offset = size - ROUNDUP(NVRAM_SPACE, mtd->erasesize) * 2;
bcm47xx_parts[3].size = ROUNDUP(NVRAM_SPACE, mtd->erasesize);
/* Place backup nvram into a partition */
bcm47xx_parts[4].name = "nvram_copy";
bcm47xx_parts[4].offset = size - ROUNDUP(NVRAM_SPACE, mtd->erasesize);
bcm47xx_parts[4].size = ROUNDUP(NVRAM_SPACE, mtd->erasesize);
break;
default:
bcm47xx_parts[3].offset = size - ROUNDUP(NVRAM_SPACE, mtd->erasesize);
bcm47xx_parts[3].size = ROUNDUP(NVRAM_SPACE, mtd->erasesize);
}
} else {
/* nvram (old 128kb config partition on netgear wgt634u) */
bcm47xx_parts[3].offset = bcm47xx_parts[0].size;
@ -486,9 +525,15 @@ init_mtd_partitions(struct mtd_info *mtd, size_t size)
dual_image_offset=find_dual_image_off(mtd,size);
/* linux (kernel and rootfs) */
if (cfe_size != 384 * 1024) {
if (get_router() == ROUTER_SIMPLETECH_SIMPLESHARE) {
bcm47xx_parts[1].offset = bcm47xx_parts[0].size;
bcm47xx_parts[1].size = bcm47xx_parts[4].offset - dual_image_offset -
bcm47xx_parts[1].offset - custom_data_size;
} else {
bcm47xx_parts[1].offset = bcm47xx_parts[0].size;
bcm47xx_parts[1].size = bcm47xx_parts[3].offset - dual_image_offset -
bcm47xx_parts[1].offset - board_data_size;
bcm47xx_parts[1].offset - custom_data_size;
}
} else {
/* do not count the elf loader, which is on one block */
bcm47xx_parts[1].offset = bcm47xx_parts[0].size +
@ -496,14 +541,14 @@ init_mtd_partitions(struct mtd_info *mtd, size_t size)
bcm47xx_parts[1].size = size -
bcm47xx_parts[0].size -
(2*bcm47xx_parts[3].size) -
mtd->erasesize - board_data_size;
mtd->erasesize - custom_data_size;
}
/* find and size rootfs */
find_root(mtd,size,&bcm47xx_parts[2]);
bcm47xx_parts[2].size = size - dual_image_offset -
bcm47xx_parts[2].offset -
bcm47xx_parts[3].size - board_data_size;
bcm47xx_parts[3].size - custom_data_size;
return bcm47xx_parts;
}