diff options
Diffstat (limited to 'target/linux/ar71xx/files-2.6.39/arch/mips/ar71xx/setup.c')
-rw-r--r-- | target/linux/ar71xx/files-2.6.39/arch/mips/ar71xx/setup.c | 482 |
1 files changed, 0 insertions, 482 deletions
diff --git a/target/linux/ar71xx/files-2.6.39/arch/mips/ar71xx/setup.c b/target/linux/ar71xx/files-2.6.39/arch/mips/ar71xx/setup.c deleted file mode 100644 index b1829a6da2..0000000000 --- a/target/linux/ar71xx/files-2.6.39/arch/mips/ar71xx/setup.c +++ /dev/null @@ -1,482 +0,0 @@ -/* - * Atheros AR71xx SoC specific setup - * - * Copyright (C) 2010-2011 Jaiganesh Narayanan <jnarayanan@atheros.com> - * Copyright (C) 2008-2009 Gabor Juhos <juhosg@openwrt.org> - * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org> - * - * Parts of this file are based on Atheros 2.6.15 BSP - * Parts of this file are based on Atheros 2.6.31 BSP - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. - */ - -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/bootmem.h> - -#include <asm/bootinfo.h> -#include <asm/time.h> /* for mips_hpt_frequency */ -#include <asm/reboot.h> /* for _machine_{restart,halt} */ -#include <asm/mips_machine.h> - -#include <asm/mach-ar71xx/ar71xx.h> - -#include "machtype.h" -#include "devices.h" - -#define AR71XX_SYS_TYPE_LEN 64 - -u32 ar71xx_cpu_freq; -EXPORT_SYMBOL_GPL(ar71xx_cpu_freq); - -u32 ar71xx_ahb_freq; -EXPORT_SYMBOL_GPL(ar71xx_ahb_freq); - -u32 ar71xx_ddr_freq; -EXPORT_SYMBOL_GPL(ar71xx_ddr_freq); - -u32 ar71xx_ref_freq; -EXPORT_SYMBOL_GPL(ar71xx_ref_freq); - -enum ar71xx_soc_type ar71xx_soc; -EXPORT_SYMBOL_GPL(ar71xx_soc); - -u32 ar71xx_soc_rev; -EXPORT_SYMBOL_GPL(ar71xx_soc_rev); - -static char ar71xx_sys_type[AR71XX_SYS_TYPE_LEN]; - -static void ar71xx_restart(char *command) -{ - ar71xx_device_stop(RESET_MODULE_FULL_CHIP); - for (;;) - if (cpu_wait) - cpu_wait(); -} - -static void ar71xx_halt(void) -{ - while (1) - cpu_wait(); -} - -static void __init ar71xx_detect_mem_size(void) -{ - unsigned long size; - - for (size = AR71XX_MEM_SIZE_MIN; size < AR71XX_MEM_SIZE_MAX; - size <<= 1) { - if (!memcmp(ar71xx_detect_mem_size, - ar71xx_detect_mem_size + size, 1024)) - break; - } - - add_memory_region(0, size, BOOT_MEM_RAM); -} - -static void __init ar71xx_detect_sys_type(void) -{ - char *chip = "????"; - u32 id; - u32 major; - u32 minor; - u32 rev = 0; - - id = ar71xx_reset_rr(AR71XX_RESET_REG_REV_ID); - major = id & REV_ID_MAJOR_MASK; - - switch (major) { - case REV_ID_MAJOR_AR71XX: - minor = id & AR71XX_REV_ID_MINOR_MASK; - rev = id >> AR71XX_REV_ID_REVISION_SHIFT; - rev &= AR71XX_REV_ID_REVISION_MASK; - switch (minor) { - case AR71XX_REV_ID_MINOR_AR7130: - ar71xx_soc = AR71XX_SOC_AR7130; - chip = "7130"; - break; - - case AR71XX_REV_ID_MINOR_AR7141: - ar71xx_soc = AR71XX_SOC_AR7141; - chip = "7141"; - break; - - case AR71XX_REV_ID_MINOR_AR7161: - ar71xx_soc = AR71XX_SOC_AR7161; - chip = "7161"; - break; - } - break; - - case REV_ID_MAJOR_AR7240: - ar71xx_soc = AR71XX_SOC_AR7240; - chip = "7240"; - rev = id & AR724X_REV_ID_REVISION_MASK; - break; - - case REV_ID_MAJOR_AR7241: - ar71xx_soc = AR71XX_SOC_AR7241; - chip = "7241"; - rev = id & AR724X_REV_ID_REVISION_MASK; - break; - - case REV_ID_MAJOR_AR7242: - ar71xx_soc = AR71XX_SOC_AR7242; - chip = "7242"; - rev = id & AR724X_REV_ID_REVISION_MASK; - break; - - case REV_ID_MAJOR_AR913X: - minor = id & AR91XX_REV_ID_MINOR_MASK; - rev = id >> AR91XX_REV_ID_REVISION_SHIFT; - rev &= AR91XX_REV_ID_REVISION_MASK; - switch (minor) { - case AR91XX_REV_ID_MINOR_AR9130: - ar71xx_soc = AR71XX_SOC_AR9130; - chip = "9130"; - break; - - case AR91XX_REV_ID_MINOR_AR9132: - ar71xx_soc = AR71XX_SOC_AR9132; - chip = "9132"; - break; - } - break; - - case REV_ID_MAJOR_AR9330: - ar71xx_soc = AR71XX_SOC_AR9330; - chip = "9330"; - rev = id & AR933X_REV_ID_REVISION_MASK; - break; - - case REV_ID_MAJOR_AR9331: - ar71xx_soc = AR71XX_SOC_AR9331; - chip = "9331"; - rev = id & AR933X_REV_ID_REVISION_MASK; - break; - - case REV_ID_MAJOR_AR9341: - ar71xx_soc = AR71XX_SOC_AR9341; - chip = "9341"; - rev = id & AR934X_REV_ID_REVISION_MASK; - break; - - case REV_ID_MAJOR_AR9342: - ar71xx_soc = AR71XX_SOC_AR9342; - chip = "9342"; - rev = id & AR934X_REV_ID_REVISION_MASK; - break; - - case REV_ID_MAJOR_AR9344: - ar71xx_soc = AR71XX_SOC_AR9344; - chip = "9344"; - rev = id & AR934X_REV_ID_REVISION_MASK; - break; - - default: - panic("ar71xx: unknown chip id:0x%08x\n", id); - } - - ar71xx_soc_rev = rev; - - sprintf(ar71xx_sys_type, "Atheros AR%s rev %u", chip, rev); - pr_info("SoC: %s\n", ar71xx_sys_type); -} - -static void __init ar934x_detect_sys_frequency(void) -{ - u32 pll, out_div, ref_div, nint, frac, clk_ctrl, postdiv; - u32 cpu_pll, ddr_pll; - u32 bootstrap; - - bootstrap = ar71xx_reset_rr(AR934X_RESET_REG_BOOTSTRAP); - if (bootstrap & AR934X_BOOTSTRAP_REF_CLK_40) - ar71xx_ref_freq = 40 * 1000 * 1000; - else - ar71xx_ref_freq = 25 * 1000 * 1000; - - pll = ar71xx_pll_rr(AR934X_PLL_REG_CPU_CONFIG); - out_div = AR934X_CPU_PLL_CFG_OUTDIV_GET(pll); - ref_div = AR934X_CPU_PLL_CFG_REFDIV_GET(pll); - nint = AR934X_CPU_PLL_CFG_NINT_GET(pll); - frac = AR934X_CPU_PLL_CFG_NFRAC_GET(pll); - - cpu_pll = nint * ar71xx_ref_freq / ref_div; - cpu_pll += frac * ar71xx_ref_freq / (ref_div * (2 << 6)); - cpu_pll /= (1 << out_div); - - pll = ar71xx_pll_rr(AR934X_PLL_REG_DDR_CONFIG); - out_div = AR934X_DDR_PLL_CFG_OUTDIV_GET(pll); - ref_div = AR934X_DDR_PLL_CFG_REFDIV_GET(pll); - nint = AR934X_DDR_PLL_CFG_NINT_GET(pll); - frac = AR934X_DDR_PLL_CFG_NFRAC_GET(pll); - - ddr_pll = nint * ar71xx_ref_freq / ref_div; - ddr_pll += frac * ar71xx_ref_freq / (ref_div * (2 << 10)); - ddr_pll /= (1 << out_div); - - clk_ctrl = ar71xx_pll_rr(AR934X_PLL_REG_DDR_CTRL_CLOCK); - - if (clk_ctrl & AR934X_CPU_DDR_CLK_CTRL_CPU_PLL_BYPASS) { - ar71xx_cpu_freq = ar71xx_ref_freq; - } else { - postdiv = AR934X_CPU_DDR_CLK_CTRL_CPU_POST_DIV_GET(clk_ctrl); - - if (clk_ctrl & AR934X_CPU_DDR_CLK_CTRL_CPUCLK_FROM_CPUPLL) - ar71xx_cpu_freq = cpu_pll / (postdiv + 1); - else - ar71xx_cpu_freq = ddr_pll / (postdiv + 1); - } - - if (clk_ctrl & AR934X_CPU_DDR_CLK_CTRL_DDR_PLL_BYPASS) { - ar71xx_ddr_freq = ar71xx_ref_freq; - } else { - postdiv = AR934X_CPU_DDR_CLK_CTRL_DDR_POST_DIV_GET(clk_ctrl); - - if (clk_ctrl & AR934X_CPU_DDR_CLK_CTRL_DDRCLK_FROM_DDRPLL) - ar71xx_ddr_freq = ddr_pll / (postdiv + 1); - else - ar71xx_ddr_freq = cpu_pll / (postdiv + 1); - } - - if (clk_ctrl & AR934X_CPU_DDR_CLK_CTRL_AHB_PLL_BYPASS) { - ar71xx_ahb_freq = ar71xx_ref_freq; - } else { - postdiv = AR934X_CPU_DDR_CLK_CTRL_AHB_POST_DIV_GET(clk_ctrl); - - if (clk_ctrl & AR934X_CPU_DDR_CLK_CTRL_AHBCLK_FROM_DDRPLL) - ar71xx_ahb_freq = ddr_pll / (postdiv + 1); - else - ar71xx_ahb_freq = cpu_pll / (postdiv + 1); - } -} - -static void __init ar91xx_detect_sys_frequency(void) -{ - u32 pll; - u32 freq; - u32 div; - - ar71xx_ref_freq = 5 * 1000 * 1000; - - pll = ar71xx_pll_rr(AR91XX_PLL_REG_CPU_CONFIG); - - div = ((pll >> AR91XX_PLL_DIV_SHIFT) & AR91XX_PLL_DIV_MASK); - freq = div * ar71xx_ref_freq; - - ar71xx_cpu_freq = freq; - - div = ((pll >> AR91XX_DDR_DIV_SHIFT) & AR91XX_DDR_DIV_MASK) + 1; - ar71xx_ddr_freq = freq / div; - - div = (((pll >> AR91XX_AHB_DIV_SHIFT) & AR91XX_AHB_DIV_MASK) + 1) * 2; - ar71xx_ahb_freq = ar71xx_cpu_freq / div; -} - -static void __init ar71xx_detect_sys_frequency(void) -{ - u32 pll; - u32 freq; - u32 div; - - ar71xx_ref_freq = 40 * 1000 * 1000; - - pll = ar71xx_pll_rr(AR71XX_PLL_REG_CPU_CONFIG); - - div = ((pll >> AR71XX_PLL_DIV_SHIFT) & AR71XX_PLL_DIV_MASK) + 1; - freq = div * ar71xx_ref_freq; - - div = ((pll >> AR71XX_CPU_DIV_SHIFT) & AR71XX_CPU_DIV_MASK) + 1; - ar71xx_cpu_freq = freq / div; - - div = ((pll >> AR71XX_DDR_DIV_SHIFT) & AR71XX_DDR_DIV_MASK) + 1; - ar71xx_ddr_freq = freq / div; - - div = (((pll >> AR71XX_AHB_DIV_SHIFT) & AR71XX_AHB_DIV_MASK) + 1) * 2; - ar71xx_ahb_freq = ar71xx_cpu_freq / div; -} - -static void __init ar724x_detect_sys_frequency(void) -{ - u32 pll; - u32 freq; - u32 div; - - ar71xx_ref_freq = 5 * 1000 * 1000; - - pll = ar71xx_pll_rr(AR724X_PLL_REG_CPU_CONFIG); - - div = ((pll >> AR724X_PLL_DIV_SHIFT) & AR724X_PLL_DIV_MASK); - freq = div * ar71xx_ref_freq; - - div = ((pll >> AR724X_PLL_REF_DIV_SHIFT) & AR724X_PLL_REF_DIV_MASK); - freq *= div; - - ar71xx_cpu_freq = freq; - - div = ((pll >> AR724X_DDR_DIV_SHIFT) & AR724X_DDR_DIV_MASK) + 1; - ar71xx_ddr_freq = freq / div; - - div = (((pll >> AR724X_AHB_DIV_SHIFT) & AR724X_AHB_DIV_MASK) + 1) * 2; - ar71xx_ahb_freq = ar71xx_cpu_freq / div; -} - -static void __init ar933x_detect_sys_frequency(void) -{ - u32 clock_ctrl; - u32 cpu_config; - u32 freq; - u32 t; - - t = ar71xx_reset_rr(AR933X_RESET_REG_BOOTSTRAP); - if (t & AR933X_BOOTSTRAP_REF_CLK_40) - ar71xx_ref_freq = (40 * 1000 * 1000); - else - ar71xx_ref_freq = (25 * 1000 * 1000); - - clock_ctrl = ar71xx_pll_rr(AR933X_PLL_CLOCK_CTRL_REG); - if (clock_ctrl & AR933X_PLL_CLOCK_CTRL_BYPASS) { - ar71xx_cpu_freq = ar71xx_ref_freq; - ar71xx_ahb_freq = ar71xx_ref_freq; - ar71xx_ddr_freq = ar71xx_ref_freq; - } else { - cpu_config = ar71xx_pll_rr(AR933X_PLL_CPU_CONFIG_REG); - - t = (cpu_config >> AR933X_PLL_CPU_CONFIG_REFDIV_SHIFT) & - AR933X_PLL_CPU_CONFIG_REFDIV_MASK; - freq = ar71xx_ref_freq / t; - - t = (cpu_config >> AR933X_PLL_CPU_CONFIG_NINT_SHIFT) & - AR933X_PLL_CPU_CONFIG_NINT_MASK; - freq *= t; - - t = (cpu_config >> AR933X_PLL_CPU_CONFIG_OUTDIV_SHIFT) & - AR933X_PLL_CPU_CONFIG_OUTDIV_MASK; - if (t == 0) - t = 1; - - freq >>= t; - - t = ((clock_ctrl >> AR933X_PLL_CLOCK_CTRL_CPU_DIV_SHIFT) & - AR933X_PLL_CLOCK_CTRL_CPU_DIV_MASK) + 1; - ar71xx_cpu_freq = freq / t; - - t = ((clock_ctrl >> AR933X_PLL_CLOCK_CTRL_DDR_DIV_SHIFT) & - AR933X_PLL_CLOCK_CTRL_DDR_DIV_MASK) + 1; - ar71xx_ddr_freq = freq / t; - - t = ((clock_ctrl >> AR933X_PLL_CLOCK_CTRL_AHB_DIV_SHIFT) & - AR933X_PLL_CLOCK_CTRL_AHB_DIV_MASK) + 1; - ar71xx_ahb_freq = freq / t; - } -} - -static void __init detect_sys_frequency(void) -{ - switch (ar71xx_soc) { - case AR71XX_SOC_AR7130: - case AR71XX_SOC_AR7141: - case AR71XX_SOC_AR7161: - ar71xx_detect_sys_frequency(); - break; - - case AR71XX_SOC_AR7240: - case AR71XX_SOC_AR7241: - case AR71XX_SOC_AR7242: - ar724x_detect_sys_frequency(); - break; - - case AR71XX_SOC_AR9130: - case AR71XX_SOC_AR9132: - ar91xx_detect_sys_frequency(); - break; - - case AR71XX_SOC_AR9330: - case AR71XX_SOC_AR9331: - ar933x_detect_sys_frequency(); - break; - - case AR71XX_SOC_AR9341: - case AR71XX_SOC_AR9342: - case AR71XX_SOC_AR9344: - ar934x_detect_sys_frequency(); - break; - default: - BUG(); - } -} - -const char *get_system_type(void) -{ - return ar71xx_sys_type; -} - -unsigned int __cpuinit get_c0_compare_irq(void) -{ - return CP0_LEGACY_COMPARE_IRQ; -} - -void __init plat_mem_setup(void) -{ - set_io_port_base(KSEG1); - - ar71xx_ddr_base = ioremap_nocache(AR71XX_DDR_CTRL_BASE, - AR71XX_DDR_CTRL_SIZE); - - ar71xx_pll_base = ioremap_nocache(AR71XX_PLL_BASE, - AR71XX_PLL_SIZE); - - ar71xx_reset_base = ioremap_nocache(AR71XX_RESET_BASE, - AR71XX_RESET_SIZE); - - ar71xx_gpio_base = ioremap_nocache(AR71XX_GPIO_BASE, AR71XX_GPIO_SIZE); - - ar71xx_usb_ctrl_base = ioremap_nocache(AR71XX_USB_CTRL_BASE, - AR71XX_USB_CTRL_SIZE); - - ar71xx_detect_mem_size(); - ar71xx_detect_sys_type(); - detect_sys_frequency(); - - pr_info("Clocks: CPU:%u.%03uMHz, DDR:%u.%03uMHz, AHB:%u.%03uMHz, " - "Ref:%u.%03uMHz", - ar71xx_cpu_freq / 1000000, (ar71xx_cpu_freq / 1000) % 1000, - ar71xx_ddr_freq / 1000000, (ar71xx_ddr_freq / 1000) % 1000, - ar71xx_ahb_freq / 1000000, (ar71xx_ahb_freq / 1000) % 1000, - ar71xx_ref_freq / 1000000, (ar71xx_ref_freq / 1000) % 1000); - - _machine_restart = ar71xx_restart; - _machine_halt = ar71xx_halt; - pm_power_off = ar71xx_halt; -} - -void __init plat_time_init(void) -{ - mips_hpt_frequency = ar71xx_cpu_freq / 2; -} - -__setup("board=", mips_machtype_setup); - -static int __init ar71xx_machine_setup(void) -{ - ar71xx_gpio_init(); - - ar71xx_add_device_uart(); - ar71xx_add_device_wdt(); - - mips_machine_setup(); - return 0; -} - -arch_initcall(ar71xx_machine_setup); - -static void __init ar71xx_generic_init(void) -{ - /* Nothing to do */ -} - -MIPS_MACHINE(AR71XX_MACH_GENERIC, "Generic", "Generic AR71xx board", - ar71xx_generic_init); |