diff options
Diffstat (limited to 'arch/blackfin/kernel/setup.c')
-rw-r--r-- | arch/blackfin/kernel/setup.c | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/arch/blackfin/kernel/setup.c b/arch/blackfin/kernel/setup.c index 934234f43839..462cae893757 100644 --- a/arch/blackfin/kernel/setup.c +++ b/arch/blackfin/kernel/setup.c @@ -43,6 +43,7 @@ #include <asm/cacheflush.h> #include <asm/blackfin.h> #include <asm/cplbinit.h> +#include <asm/div64.h> #include <asm/fixed_code.h> #include <asm/early_printk.h> @@ -237,7 +238,13 @@ void __init setup_arch(char **cmdline_p) memory_end = _ramend - DMA_UNCACHED_REGION; _ramstart = (unsigned long)__bss_stop; + _rambase = (unsigned long)_stext; +#ifdef CONFIG_MPU + /* Round up to multiple of 4MB. */ + memory_start = (_ramstart + 0x3fffff) & ~0x3fffff; +#else memory_start = PAGE_ALIGN(_ramstart); +#endif #if defined(CONFIG_MTD_UCLINUX) /* generic memory mapped MTD driver */ @@ -306,6 +313,11 @@ void __init setup_arch(char **cmdline_p) printk(KERN_NOTICE "Warning: limiting memory to %liMB due to hardware anomaly 05000263\n", memory_end >> 20); #endif /* ANOMALY_05000263 */ +#ifdef CONFIG_MPU + page_mask_nelts = ((_ramend >> PAGE_SHIFT) + 31) / 32; + page_mask_order = get_order(3 * page_mask_nelts * sizeof(long)); +#endif + #if !defined(CONFIG_MTD_UCLINUX) memory_end -= SIZE_4K; /*In case there is no valid CPLB behind memory_end make sure we don't get to close*/ #endif @@ -314,8 +326,6 @@ void __init setup_arch(char **cmdline_p) init_mm.end_data = (unsigned long)_edata; init_mm.brk = (unsigned long)0; - init_leds(); - _bfin_swrst = bfin_read_SWRST(); if (_bfin_swrst & RESET_DOUBLE) @@ -504,13 +514,17 @@ EXPORT_SYMBOL(get_sclk); unsigned long sclk_to_usecs(unsigned long sclk) { - return (USEC_PER_SEC * (u64)sclk) / get_sclk(); + u64 tmp = USEC_PER_SEC * (u64)sclk; + do_div(tmp, get_sclk()); + return tmp; } EXPORT_SYMBOL(sclk_to_usecs); unsigned long usecs_to_sclk(unsigned long usecs) { - return (get_sclk() * (u64)usecs) / USEC_PER_SEC; + u64 tmp = get_sclk() * (u64)usecs; + do_div(tmp, USEC_PER_SEC); + return tmp; } EXPORT_SYMBOL(usecs_to_sclk); |