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120 lines
3.5 KiB
120 lines
3.5 KiB
Allow bcm63xxpart to receive a caldata offset if calibration data is
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contained in flash.
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---
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drivers/mtd/bcm63xxpart.c | 51 ++++++++++++++++++++++++++++++++++++---
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include/linux/mtd/partitions.h | 2 +
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2 files changed, 49 insertions(+), 4 deletions(-)
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--- a/drivers/mtd/bcm63xxpart.c
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+++ b/drivers/mtd/bcm63xxpart.c
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@@ -76,10 +76,12 @@ static int bcm63xx_parse_cfe_partitions(
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struct mtd_partition *parts;
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int ret;
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size_t retlen;
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- unsigned int rootfsaddr, kerneladdr, spareaddr;
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+ unsigned int rootfsaddr, kerneladdr, spareaddr, nvramaddr;
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unsigned int rootfslen, kernellen, sparelen, totallen;
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unsigned int cfelen, nvramlen;
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unsigned int cfe_erasesize;
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+ unsigned int caldatalen1 = 0, caldataaddr1 = 0;
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+ unsigned int caldatalen2 = 0, caldataaddr2 = 0;
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int i;
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u32 computed_crc;
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bool rootfs_first = false;
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@@ -93,6 +95,24 @@ static int bcm63xx_parse_cfe_partitions(
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cfelen = cfe_erasesize;
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nvramlen = bcm63xx_nvram_get_psi_size() * 1024;
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nvramlen = roundup(nvramlen, cfe_erasesize);
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+ nvramaddr = master->size - nvramlen;
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+
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+ if (data) {
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+ if (data->caldata[0]) {
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+ caldatalen1 = cfe_erasesize;
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+ caldataaddr1 = rounddown(data->caldata[0],
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+ cfe_erasesize);
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+ }
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+ if (data->caldata[1]) {
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+ caldatalen2 = cfe_erasesize;
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+ caldataaddr2 = rounddown(data->caldata[1],
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+ cfe_erasesize);
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+ }
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+ if (caldataaddr1 == caldataaddr2) {
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+ caldataaddr2 = 0;
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+ caldatalen2 = 0;
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+ }
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+ }
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/* Allocate memory for buffer */
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buf = vmalloc(sizeof(struct bcm_tag));
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@@ -144,7 +164,7 @@ static int bcm63xx_parse_cfe_partitions(
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rootfsaddr = 0;
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spareaddr = cfelen;
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}
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- sparelen = master->size - spareaddr - nvramlen;
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+ sparelen = min_not_zero(nvramaddr, caldataaddr1) - spareaddr;
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/* Determine number of partitions */
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if (rootfslen > 0)
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@@ -153,6 +173,12 @@ static int bcm63xx_parse_cfe_partitions(
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if (kernellen > 0)
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nrparts++;
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+ if (caldatalen1 > 0)
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+ nrparts++;
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+
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+ if (caldatalen2 > 0)
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+ nrparts++;
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+
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/* Ask kernel for more memory */
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parts = kzalloc(sizeof(*parts) * nrparts + 10 * nrparts, GFP_KERNEL);
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if (!parts) {
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@@ -190,15 +216,32 @@ static int bcm63xx_parse_cfe_partitions(
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curpart++;
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}
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+ if (caldatalen1 > 0) {
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+ if (caldatalen2 > 0)
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+ parts[curpart].name = "cal_data1";
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+ else
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+ parts[curpart].name = "cal_data";
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+ parts[curpart].offset = caldataaddr1;
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+ parts[curpart].size = caldatalen1;
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+ curpart++;
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+ }
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+
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+ if (caldatalen2 > 0) {
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+ parts[curpart].name = "cal_data2";
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+ parts[curpart].offset = caldataaddr2;
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+ parts[curpart].size = caldatalen2;
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+ curpart++;
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+ }
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+
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parts[curpart].name = "nvram";
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- parts[curpart].offset = master->size - nvramlen;
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+ parts[curpart].offset = nvramaddr;
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parts[curpart].size = nvramlen;
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curpart++;
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/* Global partition "linux" to make easy firmware upgrade */
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parts[curpart].name = "linux";
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parts[curpart].offset = cfelen;
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- parts[curpart].size = master->size - cfelen - nvramlen;
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+ parts[curpart].size = min_not_zero(nvramaddr, caldataaddr1) - cfelen;
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for (i = 0; i < nrparts; i++)
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pr_info("Partition %d is %s offset %llx and length %llx\n", i,
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--- a/include/linux/mtd/partitions.h
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+++ b/include/linux/mtd/partitions.h
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@@ -58,10 +58,12 @@ struct device_node;
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/**
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* struct mtd_part_parser_data - used to pass data to MTD partition parsers.
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* @origin: for RedBoot, start address of MTD device
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+ * @caldata: for CFE, start address of wifi calibration data
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* @of_node: for OF parsers, device node containing partitioning information
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*/
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struct mtd_part_parser_data {
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unsigned long origin;
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+ unsigned long caldata[2];
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struct device_node *of_node;
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};
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