diff options
| -rw-r--r-- | arch/powerpc/kernel/nvram_64.c | 46 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/nvram.c | 6 |
2 files changed, 31 insertions, 21 deletions
diff --git a/arch/powerpc/kernel/nvram_64.c b/arch/powerpc/kernel/nvram_64.c index a8154f1813df..9e133355f742 100644 --- a/arch/powerpc/kernel/nvram_64.c +++ b/arch/powerpc/kernel/nvram_64.c @@ -307,13 +307,15 @@ static int __init nvram_remove_os_partition(void) return 0; } -/* nvram_create_os_partition - * - * Create a OS linux partition to buffer error logs. - * Will create a partition starting at the first free - * space found if space has enough room. +/** + * nvram_create_partition - Create a partition in nvram + * @name: name of the partition to create + * @sig: signature of the partition to create + * @req_size: size to allocate preferrably + * @min_size: minimum acceptable size (0 means req_size) */ -static int __init nvram_create_os_partition(void) +static int __init nvram_create_partition(const char *name, int sig, + int req_size, int min_size) { struct nvram_partition *part; struct nvram_partition *new_part; @@ -322,20 +324,27 @@ static int __init nvram_create_os_partition(void) loff_t tmp_index; long size = 0; int rc; - + + /* If no minimum size specified, make it the same as the + * requested size + */ + if (min_size == 0) + min_size = req_size; + /* Find a free partition that will give us the maximum needed size If can't find one that will give us the minimum size needed */ list_for_each_entry(part, &nvram_part->partition, partition) { if (part->header.signature != NVRAM_SIG_FREE) continue; - if (part->header.length >= NVRAM_MAX_REQ) { - size = NVRAM_MAX_REQ; + if (part->header.length >= req_size) { + size = req_size; free_part = part; break; } - if (!size && part->header.length >= NVRAM_MIN_REQ) { - size = NVRAM_MIN_REQ; + if (part->header.length > size && + part->header.length >= min_size) { + size = part->header.length; free_part = part; } } @@ -350,9 +359,9 @@ static int __init nvram_create_os_partition(void) } new_part->index = free_part->index; - new_part->header.signature = NVRAM_SIG_OS; + new_part->header.signature = sig; new_part->header.length = size; - strcpy(new_part->header.name, "ppc64,linux"); + strncpy(new_part->header.name, name, 12); new_part->header.checksum = nvram_checksum(&new_part->header); rc = nvram_write_header(new_part); @@ -451,10 +460,10 @@ static int __init nvram_setup_partition(void) } /* try creating a partition with the free space we have */ - rc = nvram_create_partition("ppc64,linux", ); - if (!rc) { + rc = nvram_create_partition("ppc64,linux", NVRAM_SIG_OS, + NVRAM_MAX_REQ, NVRAM_MIN_REQ); + if (!rc) return 0; - } /* need to free up some space */ rc = nvram_remove_os_partition(); @@ -463,9 +472,10 @@ static int __init nvram_setup_partition(void) } /* create a partition in this new space */ - rc = nvram_create_os_partition(); + rc = nvram_create_partition("ppc64,linux", NVRAM_SIG_OS, + NVRAM_MAX_REQ, NVRAM_MIN_REQ); if (rc) { - printk(KERN_ERR "nvram_create_os_partition: Could not find a " + printk(KERN_ERR "nvram_create_partition: Could not find a " "NVRAM partition large enough\n"); return rc; } diff --git a/arch/powerpc/platforms/pseries/nvram.c b/arch/powerpc/platforms/pseries/nvram.c index f4e4c06284b4..2a1ef5c25344 100644 --- a/arch/powerpc/platforms/pseries/nvram.c +++ b/arch/powerpc/platforms/pseries/nvram.c @@ -22,14 +22,14 @@ #include <asm/prom.h> #include <asm/machdep.h> +/* Max bytes to read/write in one go */ +#define NVRW_CNT 0x20 + static unsigned int nvram_size; static int nvram_fetch, nvram_store; static char nvram_buf[NVRW_CNT]; /* assume this is in the first 4GB */ static DEFINE_SPINLOCK(nvram_lock); -/* Max bytes to read/write in one go */ -#define NVRW_CNT 0x20 - static ssize_t pSeries_nvram_read(char *buf, size_t count, loff_t *index) { unsigned int i; |