diff options
Diffstat (limited to 'arch/mips/kernel/setup.c')
| -rw-r--r-- | arch/mips/kernel/setup.c | 74 |
1 files changed, 53 insertions, 21 deletions
diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c index bcf1b10e518..bfcec8d9bfe 100644 --- a/arch/mips/kernel/setup.c +++ b/arch/mips/kernel/setup.c @@ -246,7 +246,7 @@ static inline int parse_rd_cmdline(unsigned long* rd_start, unsigned long* rd_en #ifdef CONFIG_64BIT /* HACK: Guess if the sign extension was forgotten */ if (start > 0x0000000080000000 && start < 0x00000000ffffffff) - start |= 0xffffffff00000000; + start |= 0xffffffff00000000UL; #endif end = start + size; @@ -355,8 +355,6 @@ static inline void bootmem_init(void) } #endif - memory_present(0, first_usable_pfn, max_low_pfn); - /* Initialize the boot-time allocator with low memory only. */ bootmap_size = init_bootmem(first_usable_pfn, max_low_pfn); @@ -410,6 +408,7 @@ static inline void bootmem_init(void) /* Register lowmem ranges */ free_bootmem(PFN_PHYS(curr_pfn), PFN_PHYS(size)); + memory_present(0, curr_pfn, curr_pfn + size - 1); } /* Reserve the bootmap memory. */ @@ -419,17 +418,20 @@ static inline void bootmem_init(void) #ifdef CONFIG_BLK_DEV_INITRD initrd_below_start_ok = 1; if (initrd_start) { - unsigned long initrd_size = ((unsigned char *)initrd_end) - ((unsigned char *)initrd_start); + unsigned long initrd_size = ((unsigned char *)initrd_end) - + ((unsigned char *)initrd_start); + const int width = sizeof(long) * 2; + printk("Initial ramdisk at: 0x%p (%lu bytes)\n", (void *)initrd_start, initrd_size); if (CPHYSADDR(initrd_end) > PFN_PHYS(max_low_pfn)) { printk("initrd extends beyond end of memory " "(0x%0*Lx > 0x%0*Lx)\ndisabling initrd\n", - sizeof(long) * 2, - (unsigned long long)CPHYSADDR(initrd_end), - sizeof(long) * 2, - (unsigned long long)PFN_PHYS(max_low_pfn)); + width, + (unsigned long long) CPHYSADDR(initrd_end), + width, + (unsigned long long) PFN_PHYS(max_low_pfn)); initrd_start = initrd_end = 0; initrd_reserve_bootmem = 0; } @@ -440,6 +442,48 @@ static inline void bootmem_init(void) #endif /* CONFIG_BLK_DEV_INITRD */ } +/* + * arch_mem_init - initialize memory managment subsystem + * + * o plat_mem_setup() detects the memory configuration and will record detected + * memory areas using add_memory_region. + * o parse_cmdline_early() parses the command line for mem= options which, + * iff detected, will override the results of the automatic detection. + * + * At this stage the memory configuration of the system is known to the + * kernel but generic memory managment system is still entirely uninitialized. + * + * o bootmem_init() + * o sparse_init() + * o paging_init() + * + * At this stage the bootmem allocator is ready to use. + * + * NOTE: historically plat_mem_setup did the entire platform initialization. + * This was rather impractical because it meant plat_mem_setup had to + * get away without any kind of memory allocator. To keep old code from + * breaking plat_setup was just renamed to plat_setup and a second platform + * initialization hook for anything else was introduced. + */ + +extern void plat_mem_setup(void); + +static void __init arch_mem_init(char **cmdline_p) +{ + /* call board setup routine */ + plat_mem_setup(); + + strlcpy(command_line, arcs_cmdline, sizeof(command_line)); + strlcpy(saved_command_line, command_line, COMMAND_LINE_SIZE); + + *cmdline_p = command_line; + + parse_cmdline_early(); + bootmem_init(); + sparse_init(); + paging_init(); +} + static inline void resource_init(void) { int i; @@ -493,8 +537,6 @@ static inline void resource_init(void) #undef MAXMEM #undef MAXMEM_PFN -extern void plat_setup(void); - void __init setup_arch(char **cmdline_p) { cpu_probe(); @@ -509,18 +551,8 @@ void __init setup_arch(char **cmdline_p) #endif #endif - /* call board setup routine */ - plat_setup(); - - strlcpy(command_line, arcs_cmdline, sizeof(command_line)); - strlcpy(saved_command_line, command_line, COMMAND_LINE_SIZE); - - *cmdline_p = command_line; + arch_mem_init(cmdline_p); - parse_cmdline_early(); - bootmem_init(); - sparse_init(); - paging_init(); resource_init(); #ifdef CONFIG_SMP plat_smp_setup(); |