brcm47xx: backport two MIPS nvram.c patches
Also replace SPROM patch with (the same) mainlined version. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> SVN-Revision: 45227
This commit is contained in:
Rafał Miłecki
parent
546ba7a39f
commit
aefcd2b84c
6 changed files with 274 additions and 21 deletions
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@ -0,0 +1,88 @@
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From 9d1d08646af4491aec41d40341930b9bfd62ffa9 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
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Date: Wed, 29 Oct 2014 10:05:06 +0100
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Subject: [PATCH] MIPS: BCM47XX: Use mtd as an alternative way/API to get NVRAM
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content
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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NVRAM can be read using magic memory offset, but after all it's just a
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flash partition. On platforms where NVRAM isn't needed early we can get
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it using mtd subsystem.
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Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
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Acked-by: Hauke Mehrtens <hauke@hauke-m.de>
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Cc: linux-mips@linux-mips.org
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Patchwork: https://patchwork.linux-mips.org/patch/8266/
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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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---
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arch/mips/bcm47xx/nvram.c | 42 ++++++++++++++++++++++++++++++++++++++----
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1 file changed, 38 insertions(+), 4 deletions(-)
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diff --git a/arch/mips/bcm47xx/nvram.c b/arch/mips/bcm47xx/nvram.c
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index 21712fb..8b64991 100644
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--- a/arch/mips/bcm47xx/nvram.c
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+++ b/arch/mips/bcm47xx/nvram.c
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@@ -13,12 +13,10 @@
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#include <linux/types.h>
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#include <linux/module.h>
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-#include <linux/ssb/ssb.h>
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#include <linux/kernel.h>
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#include <linux/string.h>
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-#include <asm/addrspace.h>
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+#include <linux/mtd/mtd.h>
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#include <bcm47xx_nvram.h>
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-#include <asm/mach-bcm47xx/bcm47xx.h>
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static char nvram_buf[NVRAM_SPACE];
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static const u32 nvram_sizes[] = {0x8000, 0xF000, 0x10000};
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@@ -123,7 +121,43 @@ int bcm47xx_nvram_init_from_mem(u32 base, u32 lim)
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static int nvram_init(void)
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{
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- /* TODO: Look for MTD "nvram" partition */
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+#ifdef CONFIG_MTD
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+ struct mtd_info *mtd;
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+ struct nvram_header header;
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+ size_t bytes_read;
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+ int err, i;
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+
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+ mtd = get_mtd_device_nm("nvram");
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+ if (IS_ERR(mtd))
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+ return -ENODEV;
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+
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+ for (i = 0; i < ARRAY_SIZE(nvram_sizes); i++) {
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+ loff_t from = mtd->size - nvram_sizes[i];
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+
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+ if (from < 0)
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+ continue;
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+
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+ err = mtd_read(mtd, from, sizeof(header), &bytes_read,
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+ (uint8_t *)&header);
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+ if (!err && header.magic == NVRAM_HEADER) {
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+ u8 *dst = (uint8_t *)nvram_buf;
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+ size_t len = header.len;
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+
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+ if (header.len > NVRAM_SPACE) {
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+ pr_err("nvram on flash (%i bytes) is bigger than the reserved space in memory, will just copy the first %i bytes\n",
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+ header.len, NVRAM_SPACE);
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+ len = NVRAM_SPACE;
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+ }
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+
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+ err = mtd_read(mtd, from, len, &bytes_read, dst);
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+ if (err)
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+ return err;
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+ memset(dst + bytes_read, 0x0, NVRAM_SPACE - bytes_read);
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+
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+ return 0;
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+ }
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+ }
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+#endif
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return -ENXIO;
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}
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--
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1.8.4.5
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@ -0,0 +1,167 @@
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From 341097f17c76b3dd39539526a2af9e7fff43705e Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
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Date: Thu, 30 Oct 2014 12:50:03 +0100
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Subject: [PATCH] MIPS: BCM47XX: Clean up nvram header
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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1) Move private defines to the .c file
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2) Move SPROM helper to the sprom.c
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3) Drop unused code
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4) Rename magic to the NVRAM_MAGIC
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5) Add const to the char pointer we never modify
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Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
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Acked-by: Hauke Mehrtens <hauke@hauke-m.de>
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Cc: linux-mips@linux-mips.org
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Patchwork: https://patchwork.linux-mips.org/patch/8289/
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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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---
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arch/mips/bcm47xx/nvram.c | 23 ++++++++++----
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arch/mips/bcm47xx/sprom.c | 14 +++++++++
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arch/mips/include/asm/mach-bcm47xx/bcm47xx_nvram.h | 35 +---------------------
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3 files changed, 33 insertions(+), 39 deletions(-)
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diff --git a/arch/mips/bcm47xx/nvram.c b/arch/mips/bcm47xx/nvram.c
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index 8b64991..c5c381c 100644
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--- a/arch/mips/bcm47xx/nvram.c
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+++ b/arch/mips/bcm47xx/nvram.c
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@@ -18,6 +18,19 @@
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#include <linux/mtd/mtd.h>
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#include <bcm47xx_nvram.h>
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+#define NVRAM_MAGIC 0x48534C46 /* 'FLSH' */
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+#define NVRAM_SPACE 0x8000
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+
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+#define FLASH_MIN 0x00020000 /* Minimum flash size */
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+
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+struct nvram_header {
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+ u32 magic;
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+ u32 len;
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+ u32 crc_ver_init; /* 0:7 crc, 8:15 ver, 16:31 sdram_init */
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+ u32 config_refresh; /* 0:15 sdram_config, 16:31 sdram_refresh */
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+ u32 config_ncdl; /* ncdl values for memc */
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+};
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+
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static char nvram_buf[NVRAM_SPACE];
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static const u32 nvram_sizes[] = {0x8000, 0xF000, 0x10000};
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@@ -28,7 +41,7 @@ static u32 find_nvram_size(void __iomem *end)
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for (i = 0; i < ARRAY_SIZE(nvram_sizes); i++) {
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header = (struct nvram_header *)(end - nvram_sizes[i]);
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- if (header->magic == NVRAM_HEADER)
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+ if (header->magic == NVRAM_MAGIC)
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return nvram_sizes[i];
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}
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@@ -63,13 +76,13 @@ static int nvram_find_and_copy(void __iomem *iobase, u32 lim)
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/* Try embedded NVRAM at 4 KB and 1 KB as last resorts */
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header = (struct nvram_header *)(iobase + 4096);
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- if (header->magic == NVRAM_HEADER) {
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+ if (header->magic == NVRAM_MAGIC) {
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size = NVRAM_SPACE;
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goto found;
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}
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header = (struct nvram_header *)(iobase + 1024);
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- if (header->magic == NVRAM_HEADER) {
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+ if (header->magic == NVRAM_MAGIC) {
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size = NVRAM_SPACE;
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goto found;
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}
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@@ -139,7 +152,7 @@ static int nvram_init(void)
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err = mtd_read(mtd, from, sizeof(header), &bytes_read,
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(uint8_t *)&header);
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- if (!err && header.magic == NVRAM_HEADER) {
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+ if (!err && header.magic == NVRAM_MAGIC) {
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u8 *dst = (uint8_t *)nvram_buf;
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size_t len = header.len;
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@@ -162,7 +175,7 @@ static int nvram_init(void)
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return -ENXIO;
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}
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-int bcm47xx_nvram_getenv(char *name, char *val, size_t val_len)
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+int bcm47xx_nvram_getenv(const char *name, char *val, size_t val_len)
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{
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char *var, *value, *end, *eq;
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int err;
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diff --git a/arch/mips/bcm47xx/sprom.c b/arch/mips/bcm47xx/sprom.c
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index e772e77..2eff7fe 100644
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--- a/arch/mips/bcm47xx/sprom.c
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+++ b/arch/mips/bcm47xx/sprom.c
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@@ -136,6 +136,20 @@ static void nvram_read_leddc(const char *prefix, const char *name,
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*leddc_off_time = (val >> 16) & 0xff;
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}
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+static void bcm47xx_nvram_parse_macaddr(char *buf, u8 macaddr[6])
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+{
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+ if (strchr(buf, ':'))
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+ sscanf(buf, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx", &macaddr[0],
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+ &macaddr[1], &macaddr[2], &macaddr[3], &macaddr[4],
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+ &macaddr[5]);
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+ else if (strchr(buf, '-'))
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+ sscanf(buf, "%hhx-%hhx-%hhx-%hhx-%hhx-%hhx", &macaddr[0],
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+ &macaddr[1], &macaddr[2], &macaddr[3], &macaddr[4],
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+ &macaddr[5]);
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+ else
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+ pr_warn("Can not parse mac address: %s\n", buf);
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+}
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+
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static void nvram_read_macaddr(const char *prefix, const char *name,
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u8 val[6], bool fallback)
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{
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diff --git a/arch/mips/include/asm/mach-bcm47xx/bcm47xx_nvram.h b/arch/mips/include/asm/mach-bcm47xx/bcm47xx_nvram.h
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index 676be22..ee59ffe 100644
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--- a/arch/mips/include/asm/mach-bcm47xx/bcm47xx_nvram.h
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+++ b/arch/mips/include/asm/mach-bcm47xx/bcm47xx_nvram.h
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@@ -14,41 +14,8 @@
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#include <linux/types.h>
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#include <linux/kernel.h>
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-struct nvram_header {
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- u32 magic;
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- u32 len;
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- u32 crc_ver_init; /* 0:7 crc, 8:15 ver, 16:31 sdram_init */
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- u32 config_refresh; /* 0:15 sdram_config, 16:31 sdram_refresh */
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- u32 config_ncdl; /* ncdl values for memc */
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-};
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-
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-#define NVRAM_HEADER 0x48534C46 /* 'FLSH' */
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-#define NVRAM_VERSION 1
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-#define NVRAM_HEADER_SIZE 20
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-#define NVRAM_SPACE 0x8000
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-
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-#define FLASH_MIN 0x00020000 /* Minimum flash size */
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-
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-#define NVRAM_MAX_VALUE_LEN 255
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-#define NVRAM_MAX_PARAM_LEN 64
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-
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int bcm47xx_nvram_init_from_mem(u32 base, u32 lim);
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-extern int bcm47xx_nvram_getenv(char *name, char *val, size_t val_len);
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-
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-static inline void bcm47xx_nvram_parse_macaddr(char *buf, u8 macaddr[6])
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-{
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- if (strchr(buf, ':'))
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- sscanf(buf, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx", &macaddr[0],
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- &macaddr[1], &macaddr[2], &macaddr[3], &macaddr[4],
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- &macaddr[5]);
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- else if (strchr(buf, '-'))
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- sscanf(buf, "%hhx-%hhx-%hhx-%hhx-%hhx-%hhx", &macaddr[0],
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- &macaddr[1], &macaddr[2], &macaddr[3], &macaddr[4],
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- &macaddr[5]);
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- else
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- printk(KERN_WARNING "Can not parse mac address: %s\n", buf);
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-}
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-
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+int bcm47xx_nvram_getenv(const char *name, char *val, size_t val_len);
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int bcm47xx_nvram_gpio_pin(const char *name);
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#endif /* __BCM47XX_NVRAM_H */
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--
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1.8.4.5
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@ -1,7 +1,7 @@
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From f3505e9283290dd9bb6197bd485e6cbfb5beaf7e Mon Sep 17 00:00:00 2001
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From 9a6a2b96dfd8b01336f8519a5be7fb353cfa62fb Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
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Date: Wed, 11 Mar 2015 19:24:42 +0100
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Subject: [PATCH V2] MIPS: BCM47XX: Support SPROM prefixes for PCI devices
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Date: Sat, 14 Mar 2015 17:55:54 +0100
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Subject: [PATCH] MIPS: BCM47XX: Support SPROM prefixes for PCI devices
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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@ -9,20 +9,19 @@ Content-Transfer-Encoding: 8bit
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Support parsing SPROMs with prefixes defined like devpath1=pci/1/1
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Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
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---
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V2: I've noticed that Buffalo WZR-1750 uses an extra slash in NVRAM
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devpaths entries. I added support for them and updated comment.
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This adds one line over 80 chars, but it improved condition
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readability so I think it's alright there.
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Cc: linux-mips@linux-mips.org
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Cc: Hauke Mehrtens <hauke@hauke-m.de>
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Patchwork: https://patchwork.linux-mips.org/patch/9552/
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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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---
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arch/mips/bcm47xx/sprom.c | 33 +++++++++++++++++++++++++++++++++
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1 file changed, 33 insertions(+)
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diff --git a/arch/mips/bcm47xx/sprom.c b/arch/mips/bcm47xx/sprom.c
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index 290309e..5d32afc 100644
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index 2eff7fe..eff9205 100644
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--- a/arch/mips/bcm47xx/sprom.c
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+++ b/arch/mips/bcm47xx/sprom.c
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@@ -822,6 +822,38 @@ static int bcm47xx_get_sprom_ssb(struct ssb_bus *bus, struct ssb_sprom *out)
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@@ -836,6 +836,38 @@ static int bcm47xx_get_sprom_ssb(struct ssb_bus *bus, struct ssb_sprom *out)
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#endif
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#if defined(CONFIG_BCM47XX_BCMA)
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@ -61,7 +60,7 @@ index 290309e..5d32afc 100644
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static int bcm47xx_get_sprom_bcma(struct bcma_bus *bus, struct ssb_sprom *out)
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{
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char prefix[10];
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@@ -833,6 +865,7 @@ static int bcm47xx_get_sprom_bcma(struct bcma_bus *bus, struct ssb_sprom *out)
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@@ -847,6 +879,7 @@ static int bcm47xx_get_sprom_bcma(struct bcma_bus *bus, struct ssb_sprom *out)
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snprintf(prefix, sizeof(prefix), "pci/%u/%u/",
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bus->host_pci->bus->number + 1,
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PCI_SLOT(bus->host_pci->devfn));
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@ -5,7 +5,7 @@ This prevents the options from being delete with make kernel_oldconfig.
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--- a/drivers/bcma/Kconfig
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+++ b/drivers/bcma/Kconfig
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@@ -38,6 +38,7 @@ config BCMA_DRIVER_PCI_HOSTMODE
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@@ -39,6 +39,7 @@ config BCMA_DRIVER_PCI_HOSTMODE
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config BCMA_HOST_SOC
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bool "Support for BCMA in a SoC"
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depends on BCMA
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|
|
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@ -12,7 +12,7 @@ out the configuration than the in kernel cfe config reader.
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+obj-y += cfe_env.o
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--- /dev/null
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+++ b/arch/mips/bcm47xx/cfe_env.c
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@@ -0,0 +1,229 @@
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@@ -0,0 +1,228 @@
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+/*
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+ * CFE environment variable access
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+ *
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@ -138,8 +138,7 @@ out the configuration than the in kernel cfe config reader.
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+ * @return value of variable or NULL if undefined
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+ */
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+
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+char*
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+cfe_env_get(unsigned char *nv_buf, char* name)
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+char *cfe_env_get(unsigned char *nv_buf, const char *name)
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+{
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+ int size;
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+ unsigned char *buffer;
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@ -244,7 +243,7 @@ out the configuration than the in kernel cfe config reader.
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+
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--- a/arch/mips/bcm47xx/nvram.c
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+++ b/arch/mips/bcm47xx/nvram.c
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@@ -22,6 +22,8 @@
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@@ -33,6 +33,8 @@ struct nvram_header {
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static char nvram_buf[NVRAM_SPACE];
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static const u32 nvram_sizes[] = {0x8000, 0xF000, 0x10000};
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@ -253,7 +252,7 @@ out the configuration than the in kernel cfe config reader.
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static u32 find_nvram_size(void __iomem *end)
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{
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@@ -51,6 +53,26 @@ static int nvram_find_and_copy(void __io
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@@ -62,6 +64,26 @@ static int nvram_find_and_copy(void __io
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return -EEXIST;
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}
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@ -280,7 +279,7 @@ out the configuration than the in kernel cfe config reader.
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/* TODO: when nvram is on nand flash check for bad blocks first. */
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off = FLASH_MIN;
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while (off <= lim) {
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@@ -142,6 +164,13 @@ int bcm47xx_nvram_getenv(char *name, cha
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@@ -189,6 +211,13 @@ int bcm47xx_nvram_getenv(const char *nam
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return err;
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}
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|
|
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|
@ -1,8 +1,8 @@
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--- a/arch/mips/bcm47xx/nvram.c
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+++ b/arch/mips/bcm47xx/nvram.c
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@@ -20,7 +20,8 @@
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#include <bcm47xx_nvram.h>
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#include <asm/mach-bcm47xx/bcm47xx.h>
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@@ -31,7 +31,8 @@ struct nvram_header {
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u32 config_ncdl; /* ncdl values for memc */
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};
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-static char nvram_buf[NVRAM_SPACE];
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+char nvram_buf[NVRAM_SPACE];
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