diff options
| author | Thomas Huth <thuth@redhat.com> | 2016-10-18 22:46:43 +0200 |
|---|---|---|
| committer | David Gibson <david@gibson.dropbear.id.au> | 2016-10-28 09:36:58 +1100 |
| commit | ad723fe5a050b685e496f2202a919f9e32c45c43 (patch) | |
| tree | eef8f021590757d26e6289457ca419709f6c1f97 /include/hw/nvram/chrp_nvram.h | |
| parent | 2024c01421eb990e7043afa0e0e4d67f4477596f (diff) | |
nvram: Move the remaining CHRP NVRAM related code to chrp_nvram.[ch]
Everything that is related to CHRP NVRAM should rather reside in
chrp_nvram.c / chrp_nvram.h instead of openbios_firmware_abi.h.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Diffstat (limited to 'include/hw/nvram/chrp_nvram.h')
| -rw-r--r-- | include/hw/nvram/chrp_nvram.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/include/hw/nvram/chrp_nvram.h b/include/hw/nvram/chrp_nvram.h index 18d19765d0..b4f5b2b104 100644 --- a/include/hw/nvram/chrp_nvram.h +++ b/include/hw/nvram/chrp_nvram.h @@ -18,6 +18,36 @@ #ifndef CHRP_NVRAM_H #define CHRP_NVRAM_H +/* OpenBIOS NVRAM partition */ +typedef struct { + uint8_t signature; + uint8_t checksum; + uint16_t len; /* Big endian, length divided by 16 */ + char name[12]; +} ChrpNvramPartHdr; + +#define CHRP_NVPART_SYSTEM 0x70 +#define CHRP_NVPART_FREE 0x7f + +static inline void +chrp_nvram_finish_partition(ChrpNvramPartHdr *header, uint32_t size) +{ + unsigned int i, sum; + uint8_t *tmpptr; + + /* Length divided by 16 */ + header->len = cpu_to_be16(size >> 4); + + /* Checksum */ + tmpptr = (uint8_t *)header; + sum = *tmpptr; + for (i = 0; i < 14; i++) { + sum += tmpptr[2 + i]; + sum = (sum + ((sum & 0xff00) >> 8)) & 0xff; + } + header->checksum = sum & 0xff; +} + int chrp_nvram_create_system_partition(uint8_t *data, int min_len); int chrp_nvram_create_free_partition(uint8_t *data, int len); |