diff options
Diffstat (limited to 'target/linux/brcm63xx/patches-3.18/417-MTD-bcm63xxpart-allow-passing-a-caldata-offset.patch')
| -rw-r--r-- | target/linux/brcm63xx/patches-3.18/417-MTD-bcm63xxpart-allow-passing-a-caldata-offset.patch | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/target/linux/brcm63xx/patches-3.18/417-MTD-bcm63xxpart-allow-passing-a-caldata-offset.patch b/target/linux/brcm63xx/patches-3.18/417-MTD-bcm63xxpart-allow-passing-a-caldata-offset.patch new file mode 100644 index 0000000..3b02c07 --- /dev/null +++ b/target/linux/brcm63xx/patches-3.18/417-MTD-bcm63xxpart-allow-passing-a-caldata-offset.patch @@ -0,0 +1,120 @@ +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; + }; + |