diff options
Diffstat (limited to 'src/lib/bootmem.c')
| -rw-r--r-- | src/lib/bootmem.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/src/lib/bootmem.c b/src/lib/bootmem.c index ea02a16ddc..07391a50de 100644 --- a/src/lib/bootmem.c +++ b/src/lib/bootmem.c @@ -21,14 +21,22 @@ #include <device/resource.h> #include <stdlib.h> +static int initialized; static struct memranges bootmem; -void bootmem_init(void) +static int bootmem_is_initialized(void) +{ + return initialized; +} + +static void bootmem_init(void) { const unsigned long cacheable = IORESOURCE_CACHEABLE; const unsigned long reserved = IORESOURCE_RESERVE; struct memranges *bm = &bootmem; + initialized = 1; + /* * Fill the memory map out. The order of operations is important in * that each overlapping range will take over the next. Therefore, @@ -45,6 +53,11 @@ void bootmem_init(void) void bootmem_add_range(uint64_t start, uint64_t size, uint32_t type) { + if (!bootmem_is_initialized()) { + printk(BIOS_ERR, "%s: lib unitialized!\n", __func__); + return; + } + memranges_insert(&bootmem, start, size, type); } @@ -55,6 +68,7 @@ void bootmem_write_memory_table(struct lb_memory *mem) lb_r = &mem->map[0]; + bootmem_init(); bootmem_dump_ranges(); memranges_each_entry(r, &bootmem) { @@ -135,6 +149,11 @@ void *bootmem_allocate_buffer(size_t size) resource_t begin; resource_t end; + if (!bootmem_is_initialized()) { + printk(BIOS_ERR, "%s: lib unitialized!\n", __func__); + return NULL; + } + /* 4KiB alignment. */ size = ALIGN(size, 4096); region = NULL; |