diff options
Diffstat (limited to 'arch/mips/dec/prom/memory.c')
| -rw-r--r-- | arch/mips/dec/prom/memory.c | 38 |
1 files changed, 13 insertions, 25 deletions
diff --git a/arch/mips/dec/prom/memory.c b/arch/mips/dec/prom/memory.c index e4f6f26425e..8c62316f22f 100644 --- a/arch/mips/dec/prom/memory.c +++ b/arch/mips/dec/prom/memory.c @@ -4,7 +4,6 @@ * Copyright (C) 1998 Harald Koerfgen, Frieder Streffer and Paul M. Antoine * Copyright (C) 2000, 2002 Maciej W. Rozycki */ -#include <linux/config.h> #include <linux/init.h> #include <linux/kernel.h> #include <linux/mm.h> @@ -19,7 +18,7 @@ #include <asm/sections.h> -volatile unsigned long mem_err = 0; /* So we know an error occurred */ +volatile unsigned long mem_err; /* So we know an error occurred */ /* * Probe memory in 4MB chunks, waiting for an error to tell us we've fallen @@ -35,22 +34,22 @@ static inline void pmax_setup_memory_region(void) extern char genexcept_early; /* Install exception handler */ - memcpy(&old_handler, (void *)(KSEG0 + 0x80), 0x80); - memcpy((void *)(KSEG0 + 0x80), &genexcept_early, 0x80); + memcpy(&old_handler, (void *)(CKSEG0 + 0x80), 0x80); + memcpy((void *)(CKSEG0 + 0x80), &genexcept_early, 0x80); /* read unmapped and uncached (KSEG1) * DECstations have at least 4MB RAM * Assume less than 480MB of RAM, as this is max for 5000/2xx * FIXME this should be replaced by the first free page! */ - for (memory_page = (unsigned char *) KSEG1 + CHUNK_SIZE; - (mem_err== 0) && (memory_page < ((unsigned char *) KSEG1+0x1E000000)); - memory_page += CHUNK_SIZE) { + for (memory_page = (unsigned char *)CKSEG1 + CHUNK_SIZE; + mem_err == 0 && memory_page < (unsigned char *)CKSEG1 + 0x1e00000; + memory_page += CHUNK_SIZE) { dummy = *memory_page; } - memcpy((void *)(KSEG0 + 0x80), &old_handler, 0x80); + memcpy((void *)(CKSEG0 + 0x80), &old_handler, 0x80); - add_memory_region(0, (unsigned long)memory_page - KSEG1 - CHUNK_SIZE, + add_memory_region(0, (unsigned long)memory_page - CKSEG1 - CHUNK_SIZE, BOOT_MEM_RAM); } @@ -65,7 +64,7 @@ static inline void rex_setup_memory_region(void) memmap *bm; /* some free 64k */ - bm = (memmap *)KSEG0ADDR(0x28000); + bm = (memmap *)CKSEG0ADDR(0x28000); bitmap_size = rex_getbitmap(bm); @@ -93,16 +92,16 @@ void __init prom_meminit(u32 magic) rex_setup_memory_region(); } -unsigned long __init prom_free_prom_memory(void) +void __init prom_free_prom_memory(void) { - unsigned long addr, end; + unsigned long end; /* * Free everything below the kernel itself but leave * the first page reserved for the exception handlers. */ -#if defined(CONFIG_DECLANCE) || defined(CONFIG_DECLANCE_MODULE) +#if IS_ENABLED(CONFIG_DECLANCE) /* * Leave 128 KB reserved for Lance memory for * IOASIC DECstations. @@ -115,16 +114,5 @@ unsigned long __init prom_free_prom_memory(void) #endif end = __pa(&_text); - addr = PAGE_SIZE; - while (addr < end) { - ClearPageReserved(virt_to_page(__va(addr))); - set_page_count(virt_to_page(__va(addr)), 1); - free_page((unsigned long)__va(addr)); - addr += PAGE_SIZE; - } - - printk("Freeing unused PROM memory: %ldk freed\n", - (end - PAGE_SIZE) >> 10); - - return end - PAGE_SIZE; + free_init_pages("unused PROM memory", PAGE_SIZE, end); } |