diff options
Diffstat (limited to 'target/linux/bcm53xx/patches-5.10/800-0001-firmware-bcm47xx_nvram-support-init-from-IO-memory.patch')
| -rw-r--r-- | target/linux/bcm53xx/patches-5.10/800-0001-firmware-bcm47xx_nvram-support-init-from-IO-memory.patch | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/target/linux/bcm53xx/patches-5.10/800-0001-firmware-bcm47xx_nvram-support-init-from-IO-memory.patch b/target/linux/bcm53xx/patches-5.10/800-0001-firmware-bcm47xx_nvram-support-init-from-IO-memory.patch new file mode 100644 index 0000000000..86792d6ebf --- /dev/null +++ b/target/linux/bcm53xx/patches-5.10/800-0001-firmware-bcm47xx_nvram-support-init-from-IO-memory.patch @@ -0,0 +1,61 @@ +From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl> +Date: Thu, 11 Mar 2021 08:24:44 +0100 +Subject: [PATCH] firmware: bcm47xx_nvram: support init from IO memory +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Signed-off-by: Rafał Miłecki <rafal@milecki.pl> +--- + drivers/firmware/broadcom/bcm47xx_nvram.c | 17 +++++++++++++++++ + include/linux/bcm47xx_nvram.h | 6 ++++++ + 2 files changed, 23 insertions(+) + +--- a/drivers/firmware/broadcom/bcm47xx_nvram.c ++++ b/drivers/firmware/broadcom/bcm47xx_nvram.c +@@ -110,6 +110,23 @@ found: + return 0; + } + ++int bcm47xx_nvram_init_from_iomem(void __iomem *nvram_start, size_t res_size) ++{ ++ if (nvram_len) { ++ pr_warn("nvram already initialized\n"); ++ return -EEXIST; ++ } ++ ++ if (!bcm47xx_nvram_is_valid(nvram_start)) { ++ pr_err("No valid NVRAM found\n"); ++ return -ENOENT; ++ } ++ ++ bcm47xx_nvram_copy(nvram_start, res_size); ++ ++ return 0; ++} ++ + /* + * On bcm47xx we need access to the NVRAM very early, so we can't use mtd + * subsystem to access flash. We can't even use platform device / driver to +--- a/include/linux/bcm47xx_nvram.h ++++ b/include/linux/bcm47xx_nvram.h +@@ -11,6 +11,7 @@ + #include <linux/vmalloc.h> + + #ifdef CONFIG_BCM47XX_NVRAM ++int bcm47xx_nvram_init_from_iomem(void __iomem *nvram_start, size_t res_size); + int bcm47xx_nvram_init_from_mem(u32 base, u32 lim); + int bcm47xx_nvram_getenv(const char *name, char *val, size_t val_len); + int bcm47xx_nvram_gpio_pin(const char *name); +@@ -20,6 +21,11 @@ static inline void bcm47xx_nvram_release + vfree(nvram); + }; + #else ++static inline int bcm47xx_nvram_init_from_iomem(void __iomem *nvram_start, ++ size_t res_size) ++{ ++ return -ENOTSUPP; ++} + static inline int bcm47xx_nvram_init_from_mem(u32 base, u32 lim) + { + return -ENOTSUPP; |