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|
Allow bcm63xxpart to receive a caldata offset if calibration data is
contained in flash.
---
drivers/mtd/bcm63xxpart.c | 51 ++++++++++++++++++++++++++++++++++++---
include/linux/mtd/partitions.h | 2 +
2 files changed, 49 insertions(+), 4 deletions(-)
--- a/drivers/mtd/bcm63xxpart.c
+++ b/drivers/mtd/bcm63xxpart.c
@@ -53,10 +53,12 @@ static int bcm63xx_parse_cfe_partitions(
struct mtd_partition *parts;
int ret;
size_t retlen;
- unsigned int rootfsaddr, kerneladdr, spareaddr;
+ unsigned int rootfsaddr, kerneladdr, spareaddr, nvramaddr;
unsigned int rootfslen, kernellen, sparelen, totallen;
unsigned int cfelen, nvramlen;
unsigned int cfe_erasesize;
+ unsigned int caldatalen1 = 0, caldataaddr1 = 0;
+ unsigned int caldatalen2 = 0, caldataaddr2 = 0;
int i;
u32 computed_crc;
bool rootfs_first = false;
@@ -70,6 +72,24 @@ static int bcm63xx_parse_cfe_partitions(
cfelen = cfe_erasesize;
nvramlen = bcm63xx_nvram_get_psi_size() * SZ_1K;
nvramlen = roundup(nvramlen, cfe_erasesize);
+ nvramaddr = master->size - nvramlen;
+
+ if (data) {
+ if (data->caldata[0]) {
+ caldatalen1 = cfe_erasesize;
+ caldataaddr1 = rounddown(data->caldata[0],
+ cfe_erasesize);
+ }
+ if (data->caldata[1]) {
+ caldatalen2 = cfe_erasesize;
+ caldataaddr2 = rounddown(data->caldata[1],
+ cfe_erasesize);
+ }
+ if (caldataaddr1 == caldataaddr2) {
+ caldataaddr2 = 0;
+ caldatalen2 = 0;
+ }
+ }
/* Allocate memory for buffer */
buf = vmalloc(sizeof(struct bcm_tag));
@@ -121,7 +141,7 @@ static int bcm63xx_parse_cfe_partitions(
rootfsaddr = 0;
spareaddr = cfelen;
}
- sparelen = master->size - spareaddr - nvramlen;
+ sparelen = min_not_zero(nvramaddr, caldataaddr1) - spareaddr;
/* Determine number of partitions */
if (rootfslen > 0)
@@ -130,6 +150,12 @@ static int bcm63xx_parse_cfe_partitions(
if (kernellen > 0)
nrparts++;
+ if (caldatalen1 > 0)
+ nrparts++;
+
+ if (caldatalen2 > 0)
+ nrparts++;
+
/* Ask kernel for more memory */
parts = kzalloc(sizeof(*parts) * nrparts + 10 * nrparts, GFP_KERNEL);
if (!parts) {
@@ -167,15 +193,32 @@ static int bcm63xx_parse_cfe_partitions(
curpart++;
}
+ if (caldatalen1 > 0) {
+ if (caldatalen2 > 0)
+ parts[curpart].name = "cal_data1";
+ else
+ parts[curpart].name = "cal_data";
+ parts[curpart].offset = caldataaddr1;
+ parts[curpart].size = caldatalen1;
+ curpart++;
+ }
+
+ if (caldatalen2 > 0) {
+ parts[curpart].name = "cal_data2";
+ parts[curpart].offset = caldataaddr2;
+ parts[curpart].size = caldatalen2;
+ curpart++;
+ }
+
parts[curpart].name = "nvram";
- parts[curpart].offset = master->size - nvramlen;
+ parts[curpart].offset = nvramaddr;
parts[curpart].size = nvramlen;
curpart++;
/* Global partition "linux" to make easy firmware upgrade */
parts[curpart].name = "linux";
parts[curpart].offset = cfelen;
- parts[curpart].size = master->size - cfelen - nvramlen;
+ parts[curpart].size = min_not_zero(nvramaddr, caldataaddr1) - cfelen;
for (i = 0; i < nrparts; i++)
pr_info("Partition %d is %s offset %llx and length %llx\n", i,
--- a/include/linux/mtd/partitions.h
+++ b/include/linux/mtd/partitions.h
@@ -56,10 +56,12 @@ struct device_node;
/**
* struct mtd_part_parser_data - used to pass data to MTD partition parsers.
* @origin: for RedBoot, start address of MTD device
+ * @caldata: for CFE, start address of wifi calibration data
* @of_node: for OF parsers, device node containing partitioning information
*/
struct mtd_part_parser_data {
unsigned long origin;
+ unsigned long caldata[2];
struct device_node *of_node;
};
|
