diff options
Diffstat (limited to 'arch/mips/mti-malta/malta-memory.c')
| -rw-r--r-- | arch/mips/mti-malta/malta-memory.c | 58 |
1 files changed, 42 insertions, 16 deletions
diff --git a/arch/mips/mti-malta/malta-memory.c b/arch/mips/mti-malta/malta-memory.c index 1f73d63e92a..6d0f4ab3632 100644 --- a/arch/mips/mti-malta/malta-memory.c +++ b/arch/mips/mti-malta/malta-memory.c @@ -24,22 +24,30 @@ static fw_memblock_t mdesc[FW_MAX_MEMBLOCKS]; /* determined physical memory size, not overridden by command line args */ unsigned long physical_memsize = 0L; -fw_memblock_t * __init fw_getmdesc(void) +fw_memblock_t * __init fw_getmdesc(int eva) { - char *memsize_str, *ptr; - unsigned int memsize; + char *memsize_str, *ememsize_str __maybe_unused = NULL, *ptr; + unsigned long memsize, ememsize __maybe_unused = 0; static char cmdline[COMMAND_LINE_SIZE] __initdata; - long val; int tmp; /* otherwise look in the environment */ + memsize_str = fw_getenv("memsize"); - if (!memsize_str) { + if (memsize_str) + tmp = kstrtol(memsize_str, 0, &memsize); + if (eva) { + /* Look for ememsize for EVA */ + ememsize_str = fw_getenv("ememsize"); + if (ememsize_str) + tmp = kstrtol(ememsize_str, 0, &ememsize); + } + if (!memsize && !ememsize) { pr_warn("memsize not set in YAMON, set to default (32Mb)\n"); physical_memsize = 0x02000000; } else { - tmp = kstrtol(memsize_str, 0, &val); - physical_memsize = (unsigned long)val; + /* If ememsize is set, then set physical_memsize to that */ + physical_memsize = ememsize ? : memsize; } #ifdef CONFIG_CPU_BIG_ENDIAN @@ -54,20 +62,30 @@ fw_memblock_t * __init fw_getmdesc(void) ptr = strstr(cmdline, "memsize="); if (ptr && (ptr != cmdline) && (*(ptr - 1) != ' ')) ptr = strstr(ptr, " memsize="); + /* And now look for ememsize */ + if (eva) { + ptr = strstr(cmdline, "ememsize="); + if (ptr && (ptr != cmdline) && (*(ptr - 1) != ' ')) + ptr = strstr(ptr, " ememsize="); + } if (ptr) - memsize = memparse(ptr + 8, &ptr); + memsize = memparse(ptr + 8 + (eva ? 1 : 0), &ptr); else memsize = physical_memsize; + /* Last 64K for HIGHMEM arithmetics */ + if (memsize > 0x7fff0000) + memsize = 0x7fff0000; + memset(mdesc, 0, sizeof(mdesc)); mdesc[0].type = fw_dontuse; - mdesc[0].base = 0x00000000; + mdesc[0].base = PHYS_OFFSET; mdesc[0].size = 0x00001000; mdesc[1].type = fw_code; - mdesc[1].base = 0x00001000; + mdesc[1].base = mdesc[0].base + 0x00001000UL; mdesc[1].size = 0x000ef000; /* @@ -78,21 +96,27 @@ fw_memblock_t * __init fw_getmdesc(void) * devices. */ mdesc[2].type = fw_dontuse; - mdesc[2].base = 0x000f0000; + mdesc[2].base = mdesc[0].base + 0x000f0000UL; mdesc[2].size = 0x00010000; mdesc[3].type = fw_dontuse; - mdesc[3].base = 0x00100000; + mdesc[3].base = mdesc[0].base + 0x00100000UL; mdesc[3].size = CPHYSADDR(PFN_ALIGN((unsigned long)&_end)) - - mdesc[3].base; + 0x00100000UL; mdesc[4].type = fw_free; - mdesc[4].base = CPHYSADDR(PFN_ALIGN(&_end)); - mdesc[4].size = memsize - mdesc[4].base; + mdesc[4].base = mdesc[0].base + CPHYSADDR(PFN_ALIGN(&_end)); + mdesc[4].size = memsize - CPHYSADDR(mdesc[4].base); return &mdesc[0]; } +static void free_init_pages_eva_malta(void *begin, void *end) +{ + free_init_pages("unused kernel", __pa_symbol((unsigned long *)begin), + __pa_symbol((unsigned long *)end)); +} + static int __init fw_memtype_classify(unsigned int type) { switch (type) { @@ -109,7 +133,9 @@ void __init fw_meminit(void) { fw_memblock_t *p; - p = fw_getmdesc(); + p = fw_getmdesc(config_enabled(CONFIG_EVA)); + free_init_pages_eva = (config_enabled(CONFIG_EVA) ? + free_init_pages_eva_malta : NULL); while (p->size) { long type; |