diff options
Diffstat (limited to 'target/linux/brcm63xx/patches-3.3/436-MTD-bcm63xxpart-allow-passing-a-caldata-offset.patch')
| -rw-r--r-- | target/linux/brcm63xx/patches-3.3/436-MTD-bcm63xxpart-allow-passing-a-caldata-offset.patch | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/target/linux/brcm63xx/patches-3.3/436-MTD-bcm63xxpart-allow-passing-a-caldata-offset.patch b/target/linux/brcm63xx/patches-3.3/436-MTD-bcm63xxpart-allow-passing-a-caldata-offset.patch new file mode 100644 index 0000000000..681bab2488 --- /dev/null +++ b/target/linux/brcm63xx/patches-3.3/436-MTD-bcm63xxpart-allow-passing-a-caldata-offset.patch @@ -0,0 +1,118 @@ +From 8ab86c5dc38ad4de1442e50e0adbc354d9184d71 Mon Sep 17 00:00:00 2001 +From: Jonas Gorski <jonas.gorski@gmail.com> +Date: Tue, 1 May 2012 14:38:41 +0200 +Subject: [PATCH 68/79] MTD: bcm63xxpart: allow passing a caldata offset + +Allow bcm63xxpart to receive a caldata offset if calibration data is +contained in flash. +--- + drivers/mtd/bcm63xxpart.c | 47 ++++++++++++++++++++++++++++++++++++++-- + include/linux/mtd/partitions.h | 2 ++ + 2 files changed, 47 insertions(+), 2 deletions(-) + +--- a/drivers/mtd/bcm63xxpart.c ++++ b/drivers/mtd/bcm63xxpart.c +@@ -80,6 +80,8 @@ static int bcm63xx_parse_cfe_partitions( + 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; +@@ -94,6 +96,23 @@ static int bcm63xx_parse_cfe_partitions( + nvramlen = bcm63xx_nvram_get_psi_size() * 1024; + nvramlen = roundup(nvramlen, cfe_erasesize); + ++ 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)); + if (!buf) +@@ -144,7 +163,7 @@ static int bcm63xx_parse_cfe_partitions( + rootfsaddr = 0; + spareaddr = cfelen; + } +- sparelen = master->size - spareaddr - nvramlen; ++ sparelen = master->size - spareaddr - nvramlen - caldatalen1 - caldatalen2; + + /* Determine number of partitions */ + if (rootfslen > 0) +@@ -153,6 +172,12 @@ 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) { +@@ -190,6 +215,23 @@ 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].size = nvramlen; +@@ -198,7 +240,8 @@ static int bcm63xx_parse_cfe_partitions( + /* 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 = master->size - cfelen - nvramlen ++ - caldatalen1 - caldatalen2; + + 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 +@@ -58,10 +58,12 @@ 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; + }; + |