diff options
Diffstat (limited to 'arch/blackfin/kernel')
| -rw-r--r-- | arch/blackfin/kernel/cplb-nompu/cplbinit.c | 10 | ||||
| -rw-r--r-- | arch/blackfin/kernel/setup.c | 45 |
2 files changed, 52 insertions, 3 deletions
diff --git a/arch/blackfin/kernel/cplb-nompu/cplbinit.c b/arch/blackfin/kernel/cplb-nompu/cplbinit.c index f271f39d5655..917325bfbd84 100644 --- a/arch/blackfin/kernel/cplb-nompu/cplbinit.c +++ b/arch/blackfin/kernel/cplb-nompu/cplbinit.c @@ -26,6 +26,12 @@ #include <asm/cplb.h> #include <asm/cplbinit.h> +#ifdef CONFIG_MAX_MEM_SIZE +# define CPLB_MEM CONFIG_MAX_MEM_SIZE +#else +# define CPLB_MEM CONFIG_MEM_SIZE +#endif + /* * Number of required data CPLB switchtable entries * MEMSIZE / 4 (we mostly install 4M page size CPLBs @@ -35,7 +41,7 @@ * 1 for CONFIG_DEBUG_HUNT_FOR_ZERO * 1 for ASYNC Memory */ -#define MAX_SWITCH_D_CPLBS (((CONFIG_MEM_SIZE / 4) + 16 + 1 + 1 + 1 \ +#define MAX_SWITCH_D_CPLBS (((CPLB_MEM / 4) + 16 + 1 + 1 + 1 \ + ASYNC_MEMORY_CPLB_COVERAGE) * 2) /* @@ -46,7 +52,7 @@ * possibly 1 for L2 Instruction Memory * 1 for CONFIG_DEBUG_HUNT_FOR_ZERO */ -#define MAX_SWITCH_I_CPLBS (((CONFIG_MEM_SIZE / 4) + 12 + 1 + 1 + 1) * 2) +#define MAX_SWITCH_I_CPLBS (((CPLB_MEM / 4) + 12 + 1 + 1 + 1) * 2) u_long icplb_table[MAX_CPLBS + 1]; diff --git a/arch/blackfin/kernel/setup.c b/arch/blackfin/kernel/setup.c index c2f3e73ba25a..d6668328be72 100644 --- a/arch/blackfin/kernel/setup.c +++ b/arch/blackfin/kernel/setup.c @@ -649,6 +649,49 @@ static __init void setup_bootmem_allocator(void) BOOTMEM_DEFAULT); } +#define EBSZ_TO_MEG(ebsz) \ +({ \ + int meg = 0; \ + switch (ebsz & 0xf) { \ + case 0x1: meg = 16; break; \ + case 0x3: meg = 32; break; \ + case 0x5: meg = 64; break; \ + case 0x7: meg = 128; break; \ + case 0x9: meg = 256; break; \ + case 0xb: meg = 512; break; \ + } \ + meg; \ +}) +static inline int __init get_mem_size(void) +{ +#ifdef CONFIG_MEM_SIZE + return CONFIG_MEM_SIZE; +#else +# if defined(EBIU_SDBCTL) +# if defined(BF561_FAMILY) + int ret = 0; + u32 sdbctl = bfin_read_EBIU_SDBCTL(); + ret += EBSZ_TO_MEG(sdbctl >> 0); + ret += EBSZ_TO_MEG(sdbctl >> 8); + ret += EBSZ_TO_MEG(sdbctl >> 16); + ret += EBSZ_TO_MEG(sdbctl >> 24); + return ret; +# else + return EBSZ_TO_MEG(bfin_read_EBIU_SDBCTL()); +# endif +# elif defined(EBIU_DDRCTL1) + switch (bfin_read_EBIU_DDRCTL1() & 0xc0000) { + case DEVSZ_64: return 64; + case DEVSZ_128: return 128; + case DEVSZ_256: return 256; + case DEVSZ_512: return 512; + default: return 0; + } +# endif +#endif + BUG(); +} + void __init setup_arch(char **cmdline_p) { unsigned long sclk, cclk; @@ -669,7 +712,7 @@ void __init setup_arch(char **cmdline_p) /* setup memory defaults from the user config */ physical_mem_end = 0; - _ramend = CONFIG_MEM_SIZE * 1024 * 1024; + _ramend = get_mem_size() * 1024 * 1024; memset(&bfin_memmap, 0, sizeof(bfin_memmap)); |