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| author | Gabriel L. Somlo <somlo@cmu.edu> | 2015-06-08 14:10:44 -0400 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2015-06-10 08:00:37 +0200 |
| commit | 1edd34b638f73d39a175fbc4f9ad5c97800d7470 (patch) | |
| tree | 31c3020e05fadd3e3583b190c53da962d130467d | |
| parent | 1ceaefbd0d09642fcff05c6b8da49ad8fbc050cb (diff) | |
| download | qemu-1edd34b638f73d39a175fbc4f9ad5c97800d7470.zip qemu-1edd34b638f73d39a175fbc4f9ad5c97800d7470.tar.gz qemu-1edd34b638f73d39a175fbc4f9ad5c97800d7470.tar.bz2 | |
fw_cfg: add fw_cfg_modify_i16 (update) method
Allow the ability to modify the value of an existing 16-bit integer
fw_cfg item.
Signed-off-by: Gabriel Somlo <somlo@cmu.edu>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
| -rw-r--r-- | hw/nvram/fw_cfg.c | 10 | ||||
| -rw-r--r-- | include/hw/nvram/fw_cfg.h | 1 |
2 files changed, 11 insertions, 0 deletions
diff --git a/hw/nvram/fw_cfg.c b/hw/nvram/fw_cfg.c index 68eff77..08b5cc3 100644 --- a/hw/nvram/fw_cfg.c +++ b/hw/nvram/fw_cfg.c @@ -484,6 +484,16 @@ void fw_cfg_add_i16(FWCfgState *s, uint16_t key, uint16_t value) fw_cfg_add_bytes(s, key, copy, sizeof(value)); } +void fw_cfg_modify_i16(FWCfgState *s, uint16_t key, uint16_t value) +{ + uint16_t *copy, *old; + + copy = g_malloc(sizeof(value)); + *copy = cpu_to_le16(value); + old = fw_cfg_modify_bytes_read(s, key, copy, sizeof(value)); + g_free(old); +} + void fw_cfg_add_i32(FWCfgState *s, uint16_t key, uint32_t value) { uint32_t *copy; diff --git a/include/hw/nvram/fw_cfg.h b/include/hw/nvram/fw_cfg.h index 6d8a8ac..bc6c4a0 100644 --- a/include/hw/nvram/fw_cfg.h +++ b/include/hw/nvram/fw_cfg.h @@ -67,6 +67,7 @@ typedef void (*FWCfgReadCallback)(void *opaque, uint32_t offset); void fw_cfg_add_bytes(FWCfgState *s, uint16_t key, void *data, size_t len); void fw_cfg_add_string(FWCfgState *s, uint16_t key, const char *value); void fw_cfg_add_i16(FWCfgState *s, uint16_t key, uint16_t value); +void fw_cfg_modify_i16(FWCfgState *s, uint16_t key, uint16_t value); void fw_cfg_add_i32(FWCfgState *s, uint16_t key, uint32_t value); void fw_cfg_add_i64(FWCfgState *s, uint16_t key, uint64_t value); void fw_cfg_add_callback(FWCfgState *s, uint16_t key, FWCfgCallback callback, |