diff options
Diffstat (limited to 'arch/arm/cpu/armv7/sunxi')
| -rw-r--r-- | arch/arm/cpu/armv7/sunxi/Makefile | 3 | ||||
| -rw-r--r-- | arch/arm/cpu/armv7/sunxi/board.c | 102 | ||||
| -rw-r--r-- | arch/arm/cpu/armv7/sunxi/clock_sun6i.c | 5 | ||||
| -rw-r--r-- | arch/arm/cpu/armv7/sunxi/clock_sun9i.c | 68 | ||||
| -rw-r--r-- | arch/arm/cpu/armv7/sunxi/rsb.c | 22 |
5 files changed, 142 insertions, 58 deletions
diff --git a/arch/arm/cpu/armv7/sunxi/Makefile b/arch/arm/cpu/armv7/sunxi/Makefile index 1720f7d..48db744 100644 --- a/arch/arm/cpu/armv7/sunxi/Makefile +++ b/arch/arm/cpu/armv7/sunxi/Makefile @@ -15,13 +15,16 @@ obj-y += pinmux.o obj-y += usbc.o obj-$(CONFIG_MACH_SUN6I) += prcm.o obj-$(CONFIG_MACH_SUN8I) += prcm.o +obj-$(CONFIG_MACH_SUN9I) += prcm.o obj-$(CONFIG_MACH_SUN6I) += p2wi.o obj-$(CONFIG_MACH_SUN8I) += rsb.o +obj-$(CONFIG_MACH_SUN9I) += rsb.o obj-$(CONFIG_MACH_SUN4I) += clock_sun4i.o obj-$(CONFIG_MACH_SUN5I) += clock_sun4i.o obj-$(CONFIG_MACH_SUN6I) += clock_sun6i.o obj-$(CONFIG_MACH_SUN7I) += clock_sun4i.o obj-$(CONFIG_MACH_SUN8I) += clock_sun6i.o +obj-$(CONFIG_MACH_SUN9I) += clock_sun9i.o ifndef CONFIG_SPL_BUILD ifdef CONFIG_ARMV7_PSCI diff --git a/arch/arm/cpu/armv7/sunxi/board.c b/arch/arm/cpu/armv7/sunxi/board.c index bc98c56..6e28bcd 100644 --- a/arch/arm/cpu/armv7/sunxi/board.c +++ b/arch/arm/cpu/armv7/sunxi/board.c @@ -27,28 +27,7 @@ #include <linux/compiler.h> -#ifdef CONFIG_SPL_BUILD -/* Pointer to the global data structure for SPL */ -DECLARE_GLOBAL_DATA_PTR; - -/* The sunxi internal brom will try to loader external bootloader - * from mmc0, nand flash, mmc2. - * Unfortunately we can't check how SPL was loaded so assume - * it's always the first SD/MMC controller - */ -u32 spl_boot_device(void) -{ - return BOOT_DEVICE_MMC1; -} - -/* No confirmation data available in SPL yet. Hardcode bootmode */ -u32 spl_boot_mode(void) -{ - return MMCSD_MODE_RAW; -} -#endif - -int gpio_init(void) +static int gpio_init(void) { #if CONFIG_CONS_INDEX == 1 && defined(CONFIG_UART0_PORT_F) #if defined(CONFIG_MACH_SUN4I) || defined(CONFIG_MACH_SUN7I) @@ -86,36 +65,9 @@ int gpio_init(void) return 0; } -void reset_cpu(ulong addr) -{ -#if defined(CONFIG_MACH_SUN4I) || defined(CONFIG_MACH_SUN5I) || defined(CONFIG_MACH_SUN7I) - static const struct sunxi_wdog *wdog = - &((struct sunxi_timer_reg *)SUNXI_TIMER_BASE)->wdog; - - /* Set the watchdog for its shortest interval (.5s) and wait */ - writel(WDT_MODE_RESET_EN | WDT_MODE_EN, &wdog->mode); - writel(WDT_CTRL_KEY | WDT_CTRL_RESTART, &wdog->ctl); - - while (1) { - /* sun5i sometimes gets stuck without this */ - writel(WDT_MODE_RESET_EN | WDT_MODE_EN, &wdog->mode); - } -#else /* CONFIG_MACH_SUN6I || CONFIG_MACH_SUN8I || .. */ - static const struct sunxi_wdog *wdog = - ((struct sunxi_timer_reg *)SUNXI_TIMER_BASE)->wdog; - - /* Set the watchdog for its shortest interval (.5s) and wait */ - writel(WDT_CFG_RESET, &wdog->cfg); - writel(WDT_MODE_EN, &wdog->mode); - writel(WDT_CTRL_KEY | WDT_CTRL_RESTART, &wdog->ctl); -#endif -} - -/* do some early init */ void s_init(void) { -#if defined CONFIG_SPL_BUILD && \ - (defined CONFIG_MACH_SUN6I || defined CONFIG_MACH_SUN8I) +#if defined CONFIG_MACH_SUN6I || defined CONFIG_MACH_SUN8I /* Magic (undocmented) value taken from boot0, without this DRAM * access gets messed up (seems cache related) */ setbits_le32(SUNXI_SRAMC_BASE + 0x44, 0x1800); @@ -133,9 +85,27 @@ void s_init(void) timer_init(); gpio_init(); i2c_init_board(); +} #ifdef CONFIG_SPL_BUILD - gd = &gdata; +/* The sunxi internal brom will try to loader external bootloader + * from mmc0, nand flash, mmc2. + * Unfortunately we can't check how SPL was loaded so assume + * it's always the first SD/MMC controller + */ +u32 spl_boot_device(void) +{ + return BOOT_DEVICE_MMC1; +} + +/* No confirmation data available in SPL yet. Hardcode bootmode */ +u32 spl_boot_mode(void) +{ + return MMCSD_MODE_RAW; +} + +void board_init_f(ulong dummy) +{ preloader_console_init(); #ifdef CONFIG_SPL_I2C_SUPPORT @@ -143,6 +113,36 @@ void s_init(void) i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); #endif sunxi_board_init(); + + /* Clear the BSS. */ + memset(__bss_start, 0, __bss_end - __bss_start); + + board_init_r(NULL, 0); +} +#endif + +void reset_cpu(ulong addr) +{ +#if defined(CONFIG_MACH_SUN4I) || defined(CONFIG_MACH_SUN5I) || defined(CONFIG_MACH_SUN7I) + static const struct sunxi_wdog *wdog = + &((struct sunxi_timer_reg *)SUNXI_TIMER_BASE)->wdog; + + /* Set the watchdog for its shortest interval (.5s) and wait */ + writel(WDT_MODE_RESET_EN | WDT_MODE_EN, &wdog->mode); + writel(WDT_CTRL_KEY | WDT_CTRL_RESTART, &wdog->ctl); + + while (1) { + /* sun5i sometimes gets stuck without this */ + writel(WDT_MODE_RESET_EN | WDT_MODE_EN, &wdog->mode); + } +#else /* CONFIG_MACH_SUN6I || CONFIG_MACH_SUN8I || .. */ + static const struct sunxi_wdog *wdog = + ((struct sunxi_timer_reg *)SUNXI_TIMER_BASE)->wdog; + + /* Set the watchdog for its shortest interval (.5s) and wait */ + writel(WDT_CFG_RESET, &wdog->cfg); + writel(WDT_MODE_EN, &wdog->mode); + writel(WDT_CTRL_KEY | WDT_CTRL_RESTART, &wdog->ctl); #endif } diff --git a/arch/arm/cpu/armv7/sunxi/clock_sun6i.c b/arch/arm/cpu/armv7/sunxi/clock_sun6i.c index d7a7040..e2a7867 100644 --- a/arch/arm/cpu/armv7/sunxi/clock_sun6i.c +++ b/arch/arm/cpu/armv7/sunxi/clock_sun6i.c @@ -45,10 +45,10 @@ void clock_init_safe(void) void clock_init_uart(void) { +#if CONFIG_CONS_INDEX < 5 struct sunxi_ccm_reg *const ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; -#if CONFIG_CONS_INDEX < 5 /* uart clock source is apb2 */ writel(APB2_CLK_SRC_OSC24M| APB2_CLK_RATE_N_1| @@ -68,9 +68,6 @@ void clock_init_uart(void) /* enable R_PIO and R_UART clocks, and de-assert resets */ prcm_apb0_enable(PRCM_APB0_GATE_PIO | PRCM_APB0_GATE_UART); #endif - - /* Dup with clock_init_safe(), drop once sun6i SPL support lands */ - writel(PLL6_CFG_DEFAULT, &ccm->pll6_cfg); } int clock_twi_onoff(int port, int state) diff --git a/arch/arm/cpu/armv7/sunxi/clock_sun9i.c b/arch/arm/cpu/armv7/sunxi/clock_sun9i.c new file mode 100644 index 0000000..27179ba --- /dev/null +++ b/arch/arm/cpu/armv7/sunxi/clock_sun9i.c @@ -0,0 +1,68 @@ +/* + * sun9i specific clock code + * + * (C) Copyright 2015 Hans de Goede <hdegoede@redhat.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/arch/clock.h> +#include <asm/arch/prcm.h> +#include <asm/arch/sys_proto.h> + +void clock_init_uart(void) +{ + struct sunxi_ccm_reg *const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + + /* open the clock for uart */ + setbits_le32(&ccm->apb1_gate, + CLK_GATE_OPEN << (APB1_GATE_UART_SHIFT + + CONFIG_CONS_INDEX - 1)); + /* deassert uart reset */ + setbits_le32(&ccm->apb1_reset_cfg, + 1 << (APB1_RESET_UART_SHIFT + + CONFIG_CONS_INDEX - 1)); + + /* Dup with clock_init_safe(), drop once sun9i SPL support lands */ + writel(PLL4_CFG_DEFAULT, &ccm->pll4_periph0_cfg); +} + +int clock_twi_onoff(int port, int state) +{ + struct sunxi_ccm_reg *const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + + if (port > 4) + return -1; + + /* set the apb reset and clock gate for twi */ + if (state) { + setbits_le32(&ccm->apb1_gate, + CLK_GATE_OPEN << (APB1_GATE_TWI_SHIFT + port)); + setbits_le32(&ccm->apb1_reset_cfg, + 1 << (APB1_RESET_UART_SHIFT + port)); + } else { + clrbits_le32(&ccm->apb1_reset_cfg, + 1 << (APB1_RESET_UART_SHIFT + port)); + clrbits_le32(&ccm->apb1_gate, + CLK_GATE_OPEN << (APB1_GATE_TWI_SHIFT + port)); + } + + return 0; +} + +unsigned int clock_get_pll4_periph0(void) +{ + struct sunxi_ccm_reg *const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + uint32_t rval = readl(&ccm->pll4_periph0_cfg); + int n = ((rval & CCM_PLL4_CTRL_N_MASK) >> CCM_PLL4_CTRL_N_SHIFT); + int p = ((rval & CCM_PLL4_CTRL_P_MASK) >> CCM_PLL4_CTRL_P_SHIFT); + int m = ((rval & CCM_PLL4_CTRL_M_MASK) >> CCM_PLL4_CTRL_M_SHIFT) + 1; + const int k = 1; + + return ((24000000 * n * k) >> p) / m; +} diff --git a/arch/arm/cpu/armv7/sunxi/rsb.c b/arch/arm/cpu/armv7/sunxi/rsb.c index b72bb9d..b00befb 100644 --- a/arch/arm/cpu/armv7/sunxi/rsb.c +++ b/arch/arm/cpu/armv7/sunxi/rsb.c @@ -16,14 +16,27 @@ #include <asm/arch/prcm.h> #include <asm/arch/rsb.h> +static int rsb_set_device_mode(void); + static void rsb_cfg_io(void) { +#ifdef CONFIG_MACH_SUN8I sunxi_gpio_set_cfgpin(SUNXI_GPL(0), SUN8I_GPL0_R_RSB_SCK); sunxi_gpio_set_cfgpin(SUNXI_GPL(1), SUN8I_GPL1_R_RSB_SDA); sunxi_gpio_set_pull(SUNXI_GPL(0), 1); sunxi_gpio_set_pull(SUNXI_GPL(1), 1); sunxi_gpio_set_drv(SUNXI_GPL(0), 2); sunxi_gpio_set_drv(SUNXI_GPL(1), 2); +#elif defined CONFIG_MACH_SUN9I + sunxi_gpio_set_cfgpin(SUNXI_GPN(0), SUN9I_GPN0_R_RSB_SCK); + sunxi_gpio_set_cfgpin(SUNXI_GPN(1), SUN9I_GPN1_R_RSB_SDA); + sunxi_gpio_set_pull(SUNXI_GPN(0), 1); + sunxi_gpio_set_pull(SUNXI_GPN(1), 1); + sunxi_gpio_set_drv(SUNXI_GPN(0), 2); + sunxi_gpio_set_drv(SUNXI_GPN(1), 2); +#else +#error unsupported MACH_SUNXI +#endif } static void rsb_set_clk(void) @@ -42,7 +55,7 @@ static void rsb_set_clk(void) writel((cd_odly << 8) | div, &rsb->ccr); } -void rsb_init(void) +int rsb_init(void) { struct sunxi_rsb_reg * const rsb = (struct sunxi_rsb_reg *)SUNXI_RSB_BASE; @@ -54,6 +67,8 @@ void rsb_init(void) writel(RSB_CTRL_SOFT_RST, &rsb->ctrl); rsb_set_clk(); + + return rsb_set_device_mode(); } static int rsb_await_trans(void) @@ -88,13 +103,14 @@ static int rsb_await_trans(void) return ret; } -int rsb_set_device_mode(u32 device_mode_data) +static int rsb_set_device_mode(void) { struct sunxi_rsb_reg * const rsb = (struct sunxi_rsb_reg *)SUNXI_RSB_BASE; unsigned long tmo = timer_get_us() + 1000000; - writel(RSB_DMCR_DEVICE_MODE_START | device_mode_data, &rsb->dmcr); + writel(RSB_DMCR_DEVICE_MODE_START | RSB_DMCR_DEVICE_MODE_DATA, + &rsb->dmcr); while (readl(&rsb->dmcr) & RSB_DMCR_DEVICE_MODE_START) { if (timer_get_us() > tmo) |