diff options
Diffstat (limited to 'payloads/libpayload/i386/coreboot.c')
| -rw-r--r-- | payloads/libpayload/i386/coreboot.c | 68 |
1 files changed, 30 insertions, 38 deletions
diff --git a/payloads/libpayload/i386/coreboot.c b/payloads/libpayload/i386/coreboot.c index e5d02319a7..0eb76dcf4b 100644 --- a/payloads/libpayload/i386/coreboot.c +++ b/payloads/libpayload/i386/coreboot.c @@ -31,20 +31,19 @@ #include <sysinfo.h> #include <coreboot_tables.h> -/* Some of this is x86 specific, and the rest of it - is generic. Right now, since we only support x86, - we'll avoid trying to make lots of infrastructure - we don't need. If in the future, we want to use - coreboot on some other architecture, then take out - the generic parsing code and move it elsewhere -*/ +/* + * Some of this is x86 specific, and the rest of it is generic. Right now, + * since we only support x86, we'll avoid trying to make lots of infrastructure + * we don't need. If in the future, we want to use coreboot on some other + * architecture, then take out the generic parsing code and move it elsewhere. + */ /* === Parsing code === */ -/* This is the generic parsing code */ +/* This is the generic parsing code. */ static void cb_parse_memory(unsigned char *ptr, struct sysinfo_t *info) { - struct cb_memory *mem = (struct cb_memory *) ptr; + struct cb_memory *mem = (struct cb_memory *)ptr; int count = MEM_RANGE_COUNT(mem); int i; @@ -53,18 +52,18 @@ static void cb_parse_memory(unsigned char *ptr, struct sysinfo_t *info) info->n_memranges = 0; - for(i = 0; i < count; i++) { - struct cb_memory_range *range = - (struct cb_memory_range *) MEM_RANGE_PTR(mem, i); - + for (i = 0; i < count; i++) { + struct cb_memory_range *range = + (struct cb_memory_range *)MEM_RANGE_PTR(mem, i); + if (range->type != CB_MEM_RAM) continue; info->memrange[info->n_memranges].base = - UNPACK_CB64(range->start); + UNPACK_CB64(range->start); info->memrange[info->n_memranges].size = - UNPACK_CB64(range->size); + UNPACK_CB64(range->size); info->n_memranges++; } @@ -72,55 +71,48 @@ static void cb_parse_memory(unsigned char *ptr, struct sysinfo_t *info) static void cb_parse_serial(unsigned char *ptr, struct sysinfo_t *info) { - struct cb_serial *ser = (struct cb_serial *) ptr; + struct cb_serial *ser = (struct cb_serial *)ptr; info->ser_ioport = ser->ioport; } static int cb_parse_header(void *addr, int len, struct sysinfo_t *info) { struct cb_header *header; - unsigned char *ptr = (unsigned char *) addr; + unsigned char *ptr = (unsigned char *)addr; int i; for (i = 0; i < len; i += 16, ptr += 16) { - header = (struct cb_header *) ptr; - + header = (struct cb_header *)ptr; if (!strncmp(header->signature, "LBIO", 4)) break; } - - /* We walked the entire space and didn't find anything */ + /* We walked the entire space and didn't find anything. */ if (i >= len) return -1; if (!header->table_bytes) return 0; - /* Make sure the checksums match */ - + /* Make sure the checksums match. */ if (ipchksum((uint16_t *) header, sizeof(*header)) != 0) return -1; if (ipchksum((uint16_t *) (ptr + sizeof(*header)), - header->table_bytes) != header->table_checksum) + header->table_bytes) != header->table_checksum) return -1; - /* Now, walk the tables */ + /* Now, walk the tables. */ ptr += header->header_bytes; - - for(i = 0; i < header->table_entries; i++) { - struct cb_record *rec = (struct cb_record *) ptr; - /* We only care about a few tags here - maybe - more will be interesting later - */ + for (i = 0; i < header->table_entries; i++) { + struct cb_record *rec = (struct cb_record *)ptr; - switch(rec->tag) { + /* We only care about a few tags here (maybe more later). */ + switch (rec->tag) { case CB_TAG_MEMORY: cb_parse_memory(ptr, info); break; - case CB_TAG_SERIAL: cb_parse_serial(ptr, info); break; @@ -128,19 +120,19 @@ static int cb_parse_header(void *addr, int len, struct sysinfo_t *info) ptr += rec->size; } - + return 1; } -/* == Architecture specific ==*/ -/* This is the x86 specific stuff */ +/* == Architecture specific == */ +/* This is the x86 specific stuff. */ int get_coreboot_info(struct sysinfo_t *info) { - int ret = cb_parse_header((void *) 0x0, 0x1000, info); + int ret = cb_parse_header((void *)0x0, 0x1000, info); if (ret != 1) - ret = cb_parse_header((void *) 0xf0000, 0x1000, info); + ret = cb_parse_header((void *)0xf0000, 0x1000, info); return (ret == 1) ? 0 : -1; } |