diff options
Diffstat (limited to 'arch/blackfin/kernel/setup.c')
-rw-r--r-- | arch/blackfin/kernel/setup.c | 132 |
1 files changed, 113 insertions, 19 deletions
diff --git a/arch/blackfin/kernel/setup.c b/arch/blackfin/kernel/setup.c index 2ad747e..ada8f0f 100644 --- a/arch/blackfin/kernel/setup.c +++ b/arch/blackfin/kernel/setup.c @@ -25,12 +25,16 @@ #include <asm/cacheflush.h> #include <asm/blackfin.h> #include <asm/cplbinit.h> +#include <asm/clocks.h> #include <asm/div64.h> #include <asm/cpu.h> #include <asm/fixed_code.h> #include <asm/early_printk.h> #include <asm/irq_handler.h> #include <asm/pda.h> +#ifdef CONFIG_BF60x +#include <mach/pm.h> +#endif u16 _bfin_swrst; EXPORT_SYMBOL(_bfin_swrst); @@ -550,7 +554,6 @@ static __init void memory_setup(void) { #ifdef CONFIG_MTD_UCLINUX unsigned long mtd_phys = 0; - unsigned long n; #endif unsigned long max_mem; @@ -594,9 +597,9 @@ static __init void memory_setup(void) mtd_size = PAGE_ALIGN(*((unsigned long *)(mtd_phys + 8))); # if defined(CONFIG_EXT2_FS) || defined(CONFIG_EXT3_FS) - n = ext2_image_size((void *)(mtd_phys + 0x400)); - if (n) - mtd_size = PAGE_ALIGN(n * 1024); + if (*((unsigned short *)(mtd_phys + 0x438)) == EXT2_SUPER_MAGIC) + mtd_size = + PAGE_ALIGN(*((unsigned long *)(mtd_phys + 0x404)) << 10); # endif # if defined(CONFIG_CRAMFS) @@ -612,7 +615,8 @@ static __init void memory_setup(void) /* ROM_FS is XIP, so if we found it, we need to limit memory */ if (memory_end > max_mem) { - pr_info("Limiting kernel memory to %liMB due to anomaly 05000263\n", max_mem >> 20); + pr_info("Limiting kernel memory to %liMB due to anomaly 05000263\n", + (max_mem - CONFIG_PHY_RAM_BASE_ADDRESS) >> 20); memory_end = max_mem; } } @@ -642,7 +646,8 @@ static __init void memory_setup(void) * doesn't exist, or we don't need to - then dont. */ if (memory_end > max_mem) { - pr_info("Limiting kernel memory to %liMB due to anomaly 05000263\n", max_mem >> 20); + pr_info("Limiting kernel memory to %liMB due to anomaly 05000263\n", + (max_mem - CONFIG_PHY_RAM_BASE_ADDRESS) >> 20); memory_end = max_mem; } @@ -661,8 +666,8 @@ static __init void memory_setup(void) init_mm.end_data = (unsigned long)_edata; init_mm.brk = (unsigned long)0; - printk(KERN_INFO "Board Memory: %ldMB\n", physical_mem_end >> 20); - printk(KERN_INFO "Kernel Managed Memory: %ldMB\n", _ramend >> 20); + printk(KERN_INFO "Board Memory: %ldMB\n", (physical_mem_end - CONFIG_PHY_RAM_BASE_ADDRESS) >> 20); + printk(KERN_INFO "Kernel Managed Memory: %ldMB\n", (_ramend - CONFIG_PHY_RAM_BASE_ADDRESS) >> 20); printk(KERN_INFO "Memory map:\n" " fixedcode = 0x%p-0x%p\n" @@ -705,7 +710,7 @@ void __init find_min_max_pfn(void) int i; max_pfn = 0; - min_low_pfn = memory_end; + min_low_pfn = PFN_DOWN(memory_end); for (i = 0; i < bfin_memmap.nr_map; i++) { unsigned long start, end; @@ -748,8 +753,7 @@ static __init void setup_bootmem_allocator(void) /* pfn of the first usable page frame after kernel image*/ if (min_low_pfn < memory_start >> PAGE_SHIFT) min_low_pfn = memory_start >> PAGE_SHIFT; - - start_pfn = PAGE_OFFSET >> PAGE_SHIFT; + start_pfn = CONFIG_PHY_RAM_BASE_ADDRESS >> PAGE_SHIFT; end_pfn = memory_end >> PAGE_SHIFT; /* @@ -794,8 +798,8 @@ static __init void setup_bootmem_allocator(void) } /* reserve memory before memory_start, including bootmap */ - reserve_bootmem(PAGE_OFFSET, - memory_start + bootmap_size + PAGE_SIZE - 1 - PAGE_OFFSET, + reserve_bootmem(CONFIG_PHY_RAM_BASE_ADDRESS, + memory_start + bootmap_size + PAGE_SIZE - 1 - CONFIG_PHY_RAM_BASE_ADDRESS, BOOTMEM_DEFAULT); } @@ -844,13 +848,40 @@ static inline int __init get_mem_size(void) break; } switch (ddrctl & 0x30000) { - case DEVWD_4: ret *= 2; - case DEVWD_8: ret *= 2; - case DEVWD_16: break; + case DEVWD_4: + ret *= 2; + case DEVWD_8: + ret *= 2; + case DEVWD_16: + break; } if ((ddrctl & 0xc000) == 0x4000) ret *= 2; return ret; +#elif defined(CONFIG_BF60x) + u32 ddrctl = bfin_read_DMC0_CFG(); + int ret; + switch (ddrctl & 0xf00) { + case DEVSZ_64: + ret = 64 / 8; + break; + case DEVSZ_128: + ret = 128 / 8; + break; + case DEVSZ_256: + ret = 256 / 8; + break; + case DEVSZ_512: + ret = 512 / 8; + break; + case DEVSZ_1G: + ret = 1024 / 8; + break; + case DEVSZ_2G: + ret = 2048 / 8; + break; + } + return ret; #endif BUG(); } @@ -860,6 +891,22 @@ void __init native_machine_early_platform_add_devices(void) { } +#ifdef CONFIG_BF60x +static inline u_long bfin_get_clk(char *name) +{ + struct clk *clk; + u_long clk_rate; + + clk = clk_get(NULL, name); + if (IS_ERR(clk)) + return 0; + + clk_rate = clk_get_rate(clk); + clk_put(clk); + return clk_rate; +} +#endif + void __init setup_arch(char **cmdline_p) { u32 mmr; @@ -870,6 +917,7 @@ void __init setup_arch(char **cmdline_p) enable_shadow_console(); /* Check to make sure we are running on the right processor */ + mmr = bfin_cpuid(); if (unlikely(CPUID != bfin_cpuid())) printk(KERN_ERR "ERROR: Not running on ADSP-%s: unknown CPUID 0x%04x Rev 0.%d\n", CPU, bfin_cpuid(), bfin_revid()); @@ -890,6 +938,10 @@ void __init setup_arch(char **cmdline_p) memset(&bfin_memmap, 0, sizeof(bfin_memmap)); +#ifdef CONFIG_BF60x + /* Should init clock device before parse command early */ + clk_init(); +#endif /* If the user does not specify things on the command line, use * what the bootloader set things up as */ @@ -904,6 +956,7 @@ void __init setup_arch(char **cmdline_p) memory_setup(); +#ifndef CONFIG_BF60x /* Initialize Async memory banks */ bfin_write_EBIU_AMBCTL0(AMBCTL0VAL); bfin_write_EBIU_AMBCTL1(AMBCTL1VAL); @@ -913,6 +966,7 @@ void __init setup_arch(char **cmdline_p) bfin_write_EBIU_MODE(CONFIG_EBIU_MODEVAL); bfin_write_EBIU_FCTL(CONFIG_EBIU_FCTLVAL); #endif +#endif #ifdef CONFIG_BFIN_HYSTERESIS_CONTROL bfin_write_PORTF_HYSTERESIS(HYST_PORTF_0_15); bfin_write_PORTG_HYSTERESIS(HYST_PORTG_0_15); @@ -938,7 +992,7 @@ void __init setup_arch(char **cmdline_p) printk(KERN_INFO "Hardware Trace %s and %sabled\n", (mmr & 0x1) ? "active" : "off", (mmr & 0x2) ? "en" : "dis"); - +#ifndef CONFIG_BF60x mmr = bfin_read_SYSCR(); printk(KERN_INFO "Boot Mode: %i\n", mmr & 0xF); @@ -980,7 +1034,7 @@ void __init setup_arch(char **cmdline_p) printk(KERN_INFO "Recovering from Watchdog event\n"); else if (_bfin_swrst & RESET_SOFTWARE) printk(KERN_NOTICE "Reset caused by Software reset\n"); - +#endif printk(KERN_INFO "Blackfin support (C) 2004-2010 Analog Devices, Inc.\n"); if (bfin_compiled_revid() == 0xffff) printk(KERN_INFO "Compiled for ADSP-%s Rev any, running on 0.%d\n", CPU, bfin_revid()); @@ -1008,8 +1062,13 @@ void __init setup_arch(char **cmdline_p) printk(KERN_INFO "Blackfin Linux support by http://blackfin.uclinux.org/\n"); +#ifdef CONFIG_BF60x + printk(KERN_INFO "Processor Speed: %lu MHz core clock, %lu MHz SCLk, %lu MHz SCLK0, %lu MHz SCLK1 and %lu MHz DCLK\n", + cclk / 1000000, bfin_get_clk("SYSCLK") / 1000000, get_sclk0() / 1000000, get_sclk1() / 1000000, get_dclk() / 1000000); +#else printk(KERN_INFO "Processor Speed: %lu MHz core clock and %lu MHz System Clock\n", cclk / 1000000, sclk / 1000000); +#endif setup_bootmem_allocator(); @@ -1060,10 +1119,12 @@ subsys_initcall(topology_init); /* Get the input clock frequency */ static u_long cached_clkin_hz = CONFIG_CLKIN_HZ; +#ifndef CONFIG_BF60x static u_long get_clkin_hz(void) { return cached_clkin_hz; } +#endif static int __init early_init_clkin_hz(char *buf) { cached_clkin_hz = simple_strtoul(buf, NULL, 0); @@ -1075,6 +1136,7 @@ static int __init early_init_clkin_hz(char *buf) } early_param("clkin_hz=", early_init_clkin_hz); +#ifndef CONFIG_BF60x /* Get the voltage input multiplier */ static u_long get_vco(void) { @@ -1097,10 +1159,14 @@ static u_long get_vco(void) cached_vco *= msel; return cached_vco; } +#endif /* Get the Core clock */ u_long get_cclk(void) { +#ifdef CONFIG_BF60x + return bfin_get_clk("CCLK"); +#else static u_long cached_cclk_pll_div, cached_cclk; u_long csel, ssel; @@ -1120,12 +1186,39 @@ u_long get_cclk(void) else cached_cclk = get_vco() >> csel; return cached_cclk; +#endif } EXPORT_SYMBOL(get_cclk); -/* Get the System clock */ +#ifdef CONFIG_BF60x +/* Get the bf60x clock of SCLK0 domain */ +u_long get_sclk0(void) +{ + return bfin_get_clk("SCLK0"); +} +EXPORT_SYMBOL(get_sclk0); + +/* Get the bf60x clock of SCLK1 domain */ +u_long get_sclk1(void) +{ + return bfin_get_clk("SCLK1"); +} +EXPORT_SYMBOL(get_sclk1); + +/* Get the bf60x DRAM clock */ +u_long get_dclk(void) +{ + return bfin_get_clk("DCLK"); +} +EXPORT_SYMBOL(get_dclk); +#endif + +/* Get the default system clock */ u_long get_sclk(void) { +#ifdef CONFIG_BF60x + return get_sclk0(); +#else static u_long cached_sclk; u_long ssel; @@ -1146,6 +1239,7 @@ u_long get_sclk(void) cached_sclk = get_vco() / ssel; return cached_sclk; +#endif } EXPORT_SYMBOL(get_sclk); |