diff options
Diffstat (limited to 'arch/mips/alchemy/common/setup.c')
| -rw-r--r-- | arch/mips/alchemy/common/setup.c | 119 |
1 files changed, 33 insertions, 86 deletions
diff --git a/arch/mips/alchemy/common/setup.c b/arch/mips/alchemy/common/setup.c index 1ac6b06f42a..8267e3c9772 100644 --- a/arch/mips/alchemy/common/setup.c +++ b/arch/mips/alchemy/common/setup.c @@ -27,85 +27,55 @@ #include <linux/init.h> #include <linux/ioport.h> +#include <linux/jiffies.h> #include <linux/module.h> -#include <linux/pm.h> +#include <asm/dma-coherence.h> #include <asm/mipsregs.h> -#include <asm/reboot.h> #include <asm/time.h> #include <au1000.h> -#include <prom.h> extern void __init board_setup(void); -extern void au1000_restart(char *); -extern void au1000_halt(void); -extern void au1000_power_off(void); extern void set_cpuspec(void); void __init plat_mem_setup(void) { - struct cpu_spec *sp; - char *argptr; - unsigned long prid, cpufreq, bclk; + unsigned long est_freq; - set_cpuspec(); - sp = cur_cpu_spec[0]; + /* determine core clock */ + est_freq = au1xxx_calc_clock(); + est_freq += 5000; /* round */ + est_freq -= est_freq % 10000; + printk(KERN_INFO "(PRId %08x) @ %lu.%02lu MHz\n", read_c0_prid(), + est_freq / 1000000, ((est_freq % 1000000) * 100) / 1000000); - board_setup(); /* board specific setup */ + /* this is faster than wasting cycles trying to approximate it */ + preset_lpj = (est_freq >> 1) / HZ; - prid = read_c0_prid(); - if (sp->cpu_pll_wo) -#ifdef CONFIG_SOC_AU1000_FREQUENCY - cpufreq = CONFIG_SOC_AU1000_FREQUENCY / 1000000; -#else - cpufreq = 396; -#endif - else - cpufreq = (au_readl(SYS_CPUPLL) & 0x3F) * 12; - printk(KERN_INFO "(PRID %08lx) @ %ld MHz\n", prid, cpufreq); - - if (sp->cpu_bclk) { - /* Enable BCLK switching */ - bclk = au_readl(SYS_POWERCTRL); - au_writel(bclk | 0x60, SYS_POWERCTRL); - printk(KERN_INFO "BCLK switching enabled!\n"); - } - - if (sp->cpu_od) + if (au1xxx_cpu_needs_config_od()) /* Various early Au1xx0 errata corrected by this */ set_c0_config(1 << 19); /* Set Config[OD] */ else /* Clear to obtain best system bus performance */ clear_c0_config(1 << 19); /* Clear Config[OD] */ - argptr = prom_getcmdline(); - -#ifdef CONFIG_SERIAL_8250_CONSOLE - argptr = strstr(argptr, "console="); - if (argptr == NULL) { - argptr = prom_getcmdline(); - strcat(argptr, " console=ttyS0,115200"); + hw_coherentio = 0; + coherentio = 1; + switch (alchemy_get_cputype()) { + case ALCHEMY_CPU_AU1000: + case ALCHEMY_CPU_AU1500: + case ALCHEMY_CPU_AU1100: + coherentio = 0; + break; + case ALCHEMY_CPU_AU1200: + /* Au1200 AB USB does not support coherent memory */ + if (0 == (read_c0_prid() & PRID_REV_MASK)) + coherentio = 0; + break; } -#endif -#ifdef CONFIG_FB_AU1100 - argptr = strstr(argptr, "video="); - if (argptr == NULL) { - argptr = prom_getcmdline(); - /* default panel */ - /*strcat(argptr, " video=au1100fb:panel:Sharp_320x240_16");*/ - } -#endif - -#if defined(CONFIG_SOUND_AU1X00) && !defined(CONFIG_SOC_AU1000) - /* au1000 does not support vra, au1500 and au1100 do */ - strcat(argptr, " au1000_audio=vra"); - argptr = prom_getcmdline(); -#endif - _machine_restart = au1000_restart; - _machine_halt = au1000_halt; - pm_power_off = au1000_power_off; + board_setup(); /* board specific setup */ /* IO/MEM resources. */ set_io_port_base(0); @@ -113,45 +83,22 @@ void __init plat_mem_setup(void) ioport_resource.end = IOPORT_RESOURCE_END; iomem_resource.start = IOMEM_RESOURCE_START; iomem_resource.end = IOMEM_RESOURCE_END; - - while (au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_E0S); - au_writel(SYS_CNTRL_E0 | SYS_CNTRL_EN0, SYS_COUNTER_CNTRL); - au_sync(); - while (au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_T0S); - au_writel(0, SYS_TOYTRIM); } -#if defined(CONFIG_64BIT_PHYS_ADDR) +#if defined(CONFIG_64BIT_PHYS_ADDR) && defined(CONFIG_PCI) /* This routine should be valid for all Au1x based boards */ phys_t __fixup_bigphys_addr(phys_t phys_addr, phys_t size) { + unsigned long start = ALCHEMY_PCI_MEMWIN_START; + unsigned long end = ALCHEMY_PCI_MEMWIN_END; + /* Don't fixup 36-bit addresses */ if ((phys_addr >> 32) != 0) return phys_addr; -#ifdef CONFIG_PCI - { - u32 start = (u32)Au1500_PCI_MEM_START; - u32 end = (u32)Au1500_PCI_MEM_END; - - /* Check for PCI memory window */ - if (phys_addr >= start && (phys_addr + size - 1) <= end) - return (phys_t) - ((phys_addr - start) + Au1500_PCI_MEM_START); - } -#endif - - /* - * All Au1xx0 SOCs have a PCMCIA controller. - * We setup our 32-bit pseudo addresses to be equal to the - * 36-bit addr >> 4, to make it easier to check the address - * and fix it. - * The PCMCIA socket 0 physical attribute address is 0xF 4000 0000. - * The pseudo address we use is 0xF400 0000. Any address over - * 0xF400 0000 is a PCMCIA pseudo address. - */ - if ((phys_addr >= 0xF4000000) && (phys_addr < 0xFFFFFFFF)) - return (phys_t)(phys_addr << 4); + /* Check for PCI memory window */ + if (phys_addr >= start && (phys_addr + size - 1) <= end) + return (phys_t)(AU1500_PCI_MEM_PHYS_ADDR + phys_addr); /* default nop */ return phys_addr; |