diff options
Diffstat (limited to 'include/firmware.h')
| -rw-r--r-- | include/firmware.h | 62 |
1 files changed, 55 insertions, 7 deletions
diff --git a/include/firmware.h b/include/firmware.h index 2583342230..361ff2f8ae 100644 --- a/include/firmware.h +++ b/include/firmware.h @@ -6,13 +6,23 @@ #ifndef FIRMWARE_H #define FIRMWARE_H +#include <pbl.h> +#include <printk.h> #include <types.h> #include <driver.h> +#include <debug_ll.h> +#include <linux/kernel.h> +#include <asm/sections.h> + +struct firmware { + size_t size; + const u8 *data; +}; struct firmware_handler { char *id; /* unique identifier for this firmware device */ char *model; /* description for this device */ - struct device_d *dev; + struct device *dev; void *priv; struct device_node *device_node; /* called once to prepare the firmware's programming cycle */ @@ -33,6 +43,8 @@ struct firmware_mgr *firmwaremgr_find_by_node(struct device_node *np); int firmwaremgr_load_file(struct firmware_mgr *, const char *path); char *firmware_get_searchpath(void); void firmware_set_searchpath(const char *path); +int request_firmware(const struct firmware **fw, const char *fw_name, struct device *dev); +void release_firmware(const struct firmware *fw); #else static inline struct firmware_mgr *firmwaremgr_find_by_node(struct device_node *np) { @@ -53,16 +65,52 @@ static inline void firmware_set_searchpath(const char *path) { } +static inline int request_firmware(const struct firmware **fw, const char *fw_name, + struct device *dev) +{ + return -EINVAL; +} + +static inline void release_firmware(const struct firmware *fw) +{ +} #endif void firmwaremgr_list_handlers(void); -#define get_builtin_firmware(name, start, size) \ - { \ - extern char _fw_##name##_start[]; \ - extern char _fw_##name##_end[]; \ - *start = (typeof(*start)) _fw_##name##_start; \ - *size = _fw_##name##_end - _fw_##name##_start; \ +static inline void firmware_ext_verify(const void *data_start, size_t data_size, + const void *hash_start, size_t hash_size) +{ + if (pbl_barebox_verify(data_start, data_size, + hash_start, hash_size) != 0) { + putc_ll('!'); + panic("hash mismatch, refusing to decompress"); } +} + +#define __get_builtin_firmware(name, offset, start, size) \ + do { \ + extern char _fw_##name##_start[]; \ + extern char _fw_##name##_end[]; \ + extern char _fw_##name##_sha_start[]; \ + extern char _fw_##name##_sha_end[]; \ + *start = (typeof(*start)) _fw_##name##_start; \ + *size = _fw_##name##_end - _fw_##name##_start; \ + if (!(offset)) \ + break; \ + *start += (offset); \ + firmware_ext_verify( \ + *start, *size, \ + _fw_##name##_sha_start, \ + _fw_##name##_sha_end - _fw_##name##_sha_start \ + ); \ + } while (0) + + +#define get_builtin_firmware(name, start, size) \ + __get_builtin_firmware(name, 0, start, size) + +#define get_builtin_firmware_ext(name, base, start, size) \ + __get_builtin_firmware(name, (long)base - (long)_text, start, size) #endif /* FIRMWARE_H */ |