diff options
Diffstat (limited to 'arch/mips')
| -rw-r--r-- | arch/mips/alchemy/common/Makefile | 2 | ||||
| -rw-r--r-- | arch/mips/alchemy/common/cputable.c | 52 | ||||
| -rw-r--r-- | arch/mips/alchemy/common/setup.c | 26 | ||||
| -rw-r--r-- | arch/mips/alchemy/common/time.c | 4 | ||||
| -rw-r--r-- | arch/mips/include/asm/mach-au1x00/au1000.h | 58 |
5 files changed, 42 insertions, 100 deletions
diff --git a/arch/mips/alchemy/common/Makefile b/arch/mips/alchemy/common/Makefile index 28b8aebb35e..d50d4764eaf 100644 --- a/arch/mips/alchemy/common/Makefile +++ b/arch/mips/alchemy/common/Makefile @@ -7,7 +7,7 @@ obj-y += prom.o irq.o puts.o time.o reset.o \ clocks.o platform.o power.o setup.o \ - sleeper.o cputable.o dma.o dbdma.o gpio.o + sleeper.o dma.o dbdma.o gpio.o obj-$(CONFIG_PCI) += pci.o diff --git a/arch/mips/alchemy/common/cputable.c b/arch/mips/alchemy/common/cputable.c deleted file mode 100644 index ba6430bc2d0..00000000000 --- a/arch/mips/alchemy/common/cputable.c +++ /dev/null @@ -1,52 +0,0 @@ -/* - * arch/mips/au1000/common/cputable.c - * - * Copyright (C) 2004 Dan Malek (dan@embeddededge.com) - * Copied from PowerPC and updated for Alchemy Au1xxx processors. - * - * Copyright (C) 2001 Ben. Herrenschmidt (benh@kernel.crashing.org) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - -#include <asm/mach-au1x00/au1000.h> - -struct cpu_spec *cur_cpu_spec[NR_CPUS]; - -/* With some thought, we can probably use the mask to reduce the - * size of the table. - */ -struct cpu_spec cpu_specs[] = { - { 0xffffffff, 0x00030100, "Au1000 DA", 1, 0, 1 }, - { 0xffffffff, 0x00030201, "Au1000 HA", 1, 0, 1 }, - { 0xffffffff, 0x00030202, "Au1000 HB", 1, 0, 1 }, - { 0xffffffff, 0x00030203, "Au1000 HC", 1, 1, 0 }, - { 0xffffffff, 0x00030204, "Au1000 HD", 1, 1, 0 }, - { 0xffffffff, 0x01030200, "Au1500 AB", 1, 1, 0 }, - { 0xffffffff, 0x01030201, "Au1500 AC", 0, 1, 0 }, - { 0xffffffff, 0x01030202, "Au1500 AD", 0, 1, 0 }, - { 0xffffffff, 0x02030200, "Au1100 AB", 1, 1, 0 }, - { 0xffffffff, 0x02030201, "Au1100 BA", 1, 1, 0 }, - { 0xffffffff, 0x02030202, "Au1100 BC", 1, 1, 0 }, - { 0xffffffff, 0x02030203, "Au1100 BD", 0, 1, 0 }, - { 0xffffffff, 0x02030204, "Au1100 BE", 0, 1, 0 }, - { 0xffffffff, 0x03030200, "Au1550 AA", 0, 1, 0 }, - { 0xffffffff, 0x04030200, "Au1200 AB", 0, 0, 0 }, - { 0xffffffff, 0x04030201, "Au1200 AC", 1, 0, 0 }, - { 0x00000000, 0x00000000, "Unknown Au1xxx", 1, 0, 0 } -}; - -void set_cpuspec(void) -{ - struct cpu_spec *sp; - u32 prid; - - prid = read_c0_prid(); - sp = cpu_specs; - while ((prid & sp->prid_mask) != sp->prid_value) - sp++; - cur_cpu_spec[0] = sp; -} diff --git a/arch/mips/alchemy/common/setup.c b/arch/mips/alchemy/common/setup.c index 9889ec3ba4c..4d42be811e7 100644 --- a/arch/mips/alchemy/common/setup.c +++ b/arch/mips/alchemy/common/setup.c @@ -44,37 +44,13 @@ extern void set_cpuspec(void); void __init plat_mem_setup(void) { - struct cpu_spec *sp; - unsigned long prid, cpufreq, bclk; - - set_cpuspec(); - sp = cur_cpu_spec[0]; - _machine_restart = au1000_restart; _machine_halt = au1000_halt; pm_power_off = au1000_power_off; board_setup(); /* board specific setup */ - 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 diff --git a/arch/mips/alchemy/common/time.c b/arch/mips/alchemy/common/time.c index 68d714258e9..15185708ad8 100644 --- a/arch/mips/alchemy/common/time.c +++ b/arch/mips/alchemy/common/time.c @@ -198,7 +198,7 @@ unsigned long calc_clock(void) * silicon versions of Au1000 are not sold by AMD, we don't bend * over backwards trying to determine the frequency. */ - if (cur_cpu_spec[0]->cpu_pll_wo) + if (au1xxx_cpu_has_pll_wo()) #ifdef CONFIG_SOC_AU1000_FREQUENCY cpu_speed = CONFIG_SOC_AU1000_FREQUENCY; #else @@ -221,7 +221,7 @@ void __init plat_time_init(void) est_freq += 5000; /* round */ est_freq -= est_freq%10000; - printk(KERN_INFO "CPU frequency %u.%02u MHz\n", + printk(KERN_INFO "(PRId %08x) @ %u.%02u MHz\n", read_c0_prid(), est_freq / 1000000, ((est_freq % 1000000) * 100) / 1000000); set_au1x00_speed(est_freq); diff --git a/arch/mips/include/asm/mach-au1x00/au1000.h b/arch/mips/include/asm/mach-au1x00/au1000.h index d07632e3230..5db26e60a8c 100644 --- a/arch/mips/include/asm/mach-au1x00/au1000.h +++ b/arch/mips/include/asm/mach-au1x00/au1000.h @@ -91,6 +91,44 @@ static inline u32 au_readl(unsigned long reg) return *(volatile u32 *)reg; } +/* Early Au1000 have a write-only SYS_CPUPLL register. */ +static inline int au1xxx_cpu_has_pll_wo(void) +{ + switch (read_c0_prid()) { + case 0x00030100: /* Au1000 DA */ + case 0x00030201: /* Au1000 HA */ + case 0x00030202: /* Au1000 HB */ + return 1; + } + return 0; +} + +/* does CPU need CONFIG[OD] set to fix tons of errata? */ +static inline int au1xxx_cpu_needs_config_od(void) +{ + /* + * c0_config.od (bit 19) was write only (and read as 0) on the + * early revisions of Alchemy SOCs. It disables the bus trans- + * action overlapping and needs to be set to fix various errata. + */ + switch (read_c0_prid()) { + case 0x00030100: /* Au1000 DA */ + case 0x00030201: /* Au1000 HA */ + case 0x00030202: /* Au1000 HB */ + case 0x01030200: /* Au1500 AB */ + /* + * Au1100/Au1200 errata actually keep silence about this bit, + * so we set it just in case for those revisions that require + * it to be set according to the (now gone) cpu_table. + */ + case 0x02030200: /* Au1100 AB */ + case 0x02030201: /* Au1100 BA */ + case 0x02030202: /* Au1100 BC */ + case 0x04030201: /* Au1200 AC */ + return 1; + } + return 0; +} /* arch/mips/au1000/common/clocks.c */ extern void set_au1x00_speed(unsigned int new_freq); @@ -1739,24 +1777,4 @@ static AU1X00_SYS * const sys = (AU1X00_SYS *)SYS_BASE; #endif -/* - * Processor information based on PRID. - * Copied from PowerPC. - */ -#ifndef _LANGUAGE_ASSEMBLY -struct cpu_spec { - /* CPU is matched via (PRID & prid_mask) == prid_value */ - unsigned int prid_mask; - unsigned int prid_value; - - char *cpu_name; - unsigned char cpu_od; /* Set Config[OD] */ - unsigned char cpu_bclk; /* Enable BCLK switching */ - unsigned char cpu_pll_wo; /* sys_cpupll reg. write-only */ -}; - -extern struct cpu_spec cpu_specs[]; -extern struct cpu_spec *cur_cpu_spec[]; -#endif - #endif |