Introduce env support for sata device. 1. Implement write_env/read_env/env_relocate_spec/saveenv/sata_get_env_dev 2. If want to enable this feature, define CONFIG_ENV_IS_IN_SATA, and define CONFIG_SYS_SATA_ENV_DEV or implement your own sata_get_ev_dev.
Signed-off-by: Peng Fan van.freenix@gmail.com Cc: Simon Glass sjg@chromium.org Cc: Joe Hershberger joe.hershberger@ni.com Cc: Bin Meng bmeng.cn@gmail.com Cc: Stefan Roese sr@denx.de Cc: Heiko Schocher hs@denx.de Cc: Stuart Longland stuartl@vrt.com.au Cc: Maxime Ripard maxime.ripard@free-electrons.com Cc: Tom Rini trini@konsulko.com ---
V3: Discard the ENV_IS_EMBEDDED test which was missed to removed in V2.
V2: Add error msg when ENV REDUND, since not supported now. Discard ent_ptr Use blk_dread/blk_dwrite
cmd/nvedit.c | 3 +- common/Makefile | 1 + common/env_sata.c | 127 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 130 insertions(+), 1 deletion(-) create mode 100644 common/env_sata.c
diff --git a/cmd/nvedit.c b/cmd/nvedit.c index 9cf884e..b67563b 100644 --- a/cmd/nvedit.c +++ b/cmd/nvedit.c @@ -49,12 +49,13 @@ DECLARE_GLOBAL_DATA_PTR; !defined(CONFIG_ENV_IS_IN_NAND) && \ !defined(CONFIG_ENV_IS_IN_NVRAM) && \ !defined(CONFIG_ENV_IS_IN_ONENAND) && \ + !defined(CONFIG_ENV_IS_IN_SATA) && \ !defined(CONFIG_ENV_IS_IN_SPI_FLASH) && \ !defined(CONFIG_ENV_IS_IN_REMOTE) && \ !defined(CONFIG_ENV_IS_IN_UBI) && \ !defined(CONFIG_ENV_IS_NOWHERE) # error Define one of CONFIG_ENV_IS_IN_{EEPROM|FLASH|DATAFLASH|ONENAND|\ -SPI_FLASH|NVRAM|MMC|FAT|EXT4|REMOTE|UBI} or CONFIG_ENV_IS_NOWHERE +SATA|SPI_FLASH|NVRAM|MMC|FAT|EXT4|REMOTE|UBI} or CONFIG_ENV_IS_NOWHERE #endif
/* diff --git a/common/Makefile b/common/Makefile index 9a4b817..b23f312 100644 --- a/common/Makefile +++ b/common/Makefile @@ -50,6 +50,7 @@ obj-$(CONFIG_ENV_IS_IN_EXT4) += env_ext4.o obj-$(CONFIG_ENV_IS_IN_NAND) += env_nand.o obj-$(CONFIG_ENV_IS_IN_NVRAM) += env_nvram.o obj-$(CONFIG_ENV_IS_IN_ONENAND) += env_onenand.o +obj-$(CONFIG_ENV_IS_IN_SATA) += env_sata.o obj-$(CONFIG_ENV_IS_IN_SPI_FLASH) += env_sf.o obj-$(CONFIG_ENV_IS_IN_REMOTE) += env_remote.o obj-$(CONFIG_ENV_IS_IN_UBI) += env_ubi.o diff --git a/common/env_sata.c b/common/env_sata.c new file mode 100644 index 0000000..b0cee35 --- /dev/null +++ b/common/env_sata.c @@ -0,0 +1,127 @@ +/* + * (C) Copyright 2010-2016 Freescale Semiconductor, Inc. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +/* #define DEBUG */ + +#include <common.h> + +#include <command.h> +#include <environment.h> +#include <linux/stddef.h> +#include <errno.h> +#include <memalign.h> +#include <sata.h> +#include <search.h> + +#if defined(CONFIG_ENV_SIZE_REDUND) || defined(CONFIG_ENV_OFFSET_REDUND) +#error ENV REDUND not supported +#endif + +#if !defined(CONFIG_ENV_OFFSET) || !defined(CONFIG_ENV_SIZE) +#error CONFIG_ENV_OFFSET or CONFIG_ENV_SIZE not defined +#endif + +char *env_name_spec = "SATA"; + +DECLARE_GLOBAL_DATA_PTR; + +__weak int sata_get_env_dev(void) +{ + return CONFIG_SYS_SATA_ENV_DEV; +} + +int env_init(void) +{ + /* use default */ + gd->env_addr = (ulong)&default_environment[0]; + gd->env_valid = 1; + + return 0; +} + +#ifdef CONFIG_CMD_SAVEENV +static inline int write_env(struct blk_desc *sata, unsigned long size, + unsigned long offset, void *buffer) +{ + uint blk_start, blk_cnt, n; + + blk_start = ALIGN(offset, sata->blksz) / sata->blksz; + blk_cnt = ALIGN(size, sata->blksz) / sata->blksz; + + n = blk_dwrite(sata, blk_start, blk_cnt, buffer); + + return (n == blk_cnt) ? 0 : -1; +} + +int saveenv(void) +{ + ALLOC_CACHE_ALIGN_BUFFER(env_t, env_new, 1); + struct blk_desc *sata = NULL; + int env_sata, ret; + + if (sata_initialize()) + return 1; + + env_sata = sata_get_env_dev(); + + sata = sata_get_dev(env_sata); + if (sata == NULL) { + printf("Unknown SATA(%d) device for environment!\n", + env_sata); + return 1; + } + + ret = env_export(env_new); + if (ret) + return 1; + + printf("Writing to SATA(%d)...", env_sata); + if (write_env(sata, CONFIG_ENV_SIZE, CONFIG_ENV_OFFSET, &env_new)) { + puts("failed\n"); + return 1; + } + + puts("done\n"); + return 0; +} +#endif /* CONFIG_CMD_SAVEENV */ + +static inline int read_env(struct blk_desc *sata, unsigned long size, + unsigned long offset, void *buffer) +{ + uint blk_start, blk_cnt, n; + + blk_start = ALIGN(offset, sata->blksz) / sata->blksz; + blk_cnt = ALIGN(size, sata->blksz) / sata->blksz; + + n = blk_dread(sata, blk_start, blk_cnt, buffer); + + return (n == blk_cnt) ? 0 : -1; +} + +void env_relocate_spec(void) +{ + ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE); + struct blk_desc *sata = NULL; + int env_sata; + + if (sata_initialize()) + return; + + env_sata = sata_get_env_dev(); + + sata = sata_get_dev(env_sata); + if (sata == NULL) { + printf("Unknown SATA(%d) device for environment!\n", + env_sata); + return; + } + + if (read_env(sata, CONFIG_ENV_SIZE, CONFIG_ENV_OFFSET, buf)) + return set_default_env(NULL); + + env_import(buf, 1); +}