diff options
Diffstat (limited to 'arch/arm/cpu/armv7/omap-common')
| -rw-r--r-- | arch/arm/cpu/armv7/omap-common/clocks-common.c | 59 | ||||
| -rw-r--r-- | arch/arm/cpu/armv7/omap-common/hwinit-common.c | 24 | ||||
| -rw-r--r-- | arch/arm/cpu/armv7/omap-common/lowlevel_init.S | 29 | ||||
| -rw-r--r-- | arch/arm/cpu/armv7/omap-common/spl.c | 9 |
4 files changed, 102 insertions, 19 deletions
diff --git a/arch/arm/cpu/armv7/omap-common/clocks-common.c b/arch/arm/cpu/armv7/omap-common/clocks-common.c index c726093fd2..f64a10bfcb 100644 --- a/arch/arm/cpu/armv7/omap-common/clocks-common.c +++ b/arch/arm/cpu/armv7/omap-common/clocks-common.c @@ -115,17 +115,46 @@ static inline void wait_for_lock(u32 *const base) } } +inline u32 check_for_lock(u32 *const base) +{ + struct dpll_regs *const dpll_regs = (struct dpll_regs *)base; + u32 lock = readl(&dpll_regs->cm_idlest_dpll) & ST_DPLL_CLK_MASK; + + return lock; +} + static void do_setup_dpll(u32 *const base, const struct dpll_params *params, - u8 lock) + u8 lock, char *dpll) { - u32 temp; + u32 temp, M, N; struct dpll_regs *const dpll_regs = (struct dpll_regs *)base; + temp = readl(&dpll_regs->cm_clksel_dpll); + + if (check_for_lock(base)) { + /* + * The Dpll has already been locked by rom code using CH. + * Check if M,N are matching with Ideal nominal opp values. + * If matches, skip the rest otherwise relock. + */ + M = (temp & CM_CLKSEL_DPLL_M_MASK) >> CM_CLKSEL_DPLL_M_SHIFT; + N = (temp & CM_CLKSEL_DPLL_N_MASK) >> CM_CLKSEL_DPLL_N_SHIFT; + if ((M != (params->m)) || (N != (params->n))) { + debug("\n %s Dpll locked, but not for ideal M = %d," + "N = %d values, current values are M = %d," + "N= %d" , dpll, params->m, params->n, + M, N); + } else { + /* Dpll locked with ideal values for nominal opps. */ + debug("\n %s Dpll already locked with ideal" + "nominal opp values", dpll); + goto setup_post_dividers; + } + } + bypass_dpll(base); /* Set M & N */ - temp = readl(&dpll_regs->cm_clksel_dpll); - temp &= ~CM_CLKSEL_DPLL_M_MASK; temp |= (params->m << CM_CLKSEL_DPLL_M_SHIFT) & CM_CLKSEL_DPLL_M_MASK; @@ -138,6 +167,7 @@ static void do_setup_dpll(u32 *const base, const struct dpll_params *params, if (lock) do_lock_dpll(base); +setup_post_dividers: setup_post_dividers(base, params); /* Wait till the DPLL locks */ @@ -216,7 +246,8 @@ void configure_mpu_dpll(void) } params = get_mpu_dpll_params(); - do_setup_dpll(&prcm->cm_clkmode_dpll_mpu, params, DPLL_LOCK); + + do_setup_dpll(&prcm->cm_clkmode_dpll_mpu, params, DPLL_LOCK, "mpu"); debug("MPU DPLL locked\n"); } @@ -235,7 +266,8 @@ static void setup_dplls(void) * Core DPLL will be locked after setting up EMIF * using the FREQ_UPDATE method(freq_update_core()) */ - do_setup_dpll(&prcm->cm_clkmode_dpll_core, params, DPLL_NO_LOCK); + do_setup_dpll(&prcm->cm_clkmode_dpll_core, params, DPLL_NO_LOCK, + "core"); /* Set the ratios for CORE_CLK, L3_CLK, L4_CLK */ temp = (CLKSEL_CORE_X2_DIV_1 << CLKSEL_CORE_SHIFT) | (CLKSEL_L3_CORE_DIV_2 << CLKSEL_L3_SHIFT) | @@ -246,13 +278,14 @@ static void setup_dplls(void) /* lock PER dpll */ params = get_per_dpll_params(); do_setup_dpll(&prcm->cm_clkmode_dpll_per, - params, DPLL_LOCK); + params, DPLL_LOCK, "per"); debug("PER DPLL locked\n"); /* MPU dpll */ configure_mpu_dpll(); } +#ifdef CONFIG_SYS_CLOCKS_ENABLE_ALL static void setup_non_essential_dplls(void) { u32 sys_clk_khz, abe_ref_clk; @@ -267,7 +300,7 @@ static void setup_non_essential_dplls(void) CM_BYPCLK_DPLL_IVA_CLKSEL_MASK, DPLL_IVA_CLKSEL_CORE_X2_DIV_2); params = get_iva_dpll_params(); - do_setup_dpll(&prcm->cm_clkmode_dpll_iva, params, DPLL_LOCK); + do_setup_dpll(&prcm->cm_clkmode_dpll_iva, params, DPLL_LOCK, "iva"); /* * USB: @@ -287,7 +320,7 @@ static void setup_non_essential_dplls(void) sd_div << CM_CLKSEL_DPLL_DPLL_SD_DIV_SHIFT); /* Now setup the dpll with the regular function */ - do_setup_dpll(&prcm->cm_clkmode_dpll_usb, params, DPLL_LOCK); + do_setup_dpll(&prcm->cm_clkmode_dpll_usb, params, DPLL_LOCK, "usb"); /* Configure ABE dpll */ params = get_abe_dpll_params(); @@ -315,8 +348,9 @@ static void setup_non_essential_dplls(void) CM_ABE_PLL_REF_CLKSEL_CLKSEL_MASK, abe_ref_clk << CM_ABE_PLL_REF_CLKSEL_CLKSEL_SHIFT); /* Lock the dpll */ - do_setup_dpll(&prcm->cm_clkmode_dpll_abe, params, DPLL_LOCK); + do_setup_dpll(&prcm->cm_clkmode_dpll_abe, params, DPLL_LOCK, "abe"); } +#endif void do_scale_tps62361(u32 reg, u32 volt_mv) { @@ -561,10 +595,15 @@ void prcm_init(void) enable_basic_clocks(); scale_vcores(); setup_dplls(); +#ifdef CONFIG_SYS_CLOCKS_ENABLE_ALL setup_non_essential_dplls(); enable_non_essential_clocks(); +#endif break; default: break; } + + if (OMAP_INIT_CONTEXT_SPL != omap_hw_init_context()) + enable_basic_uboot_clocks(); } diff --git a/arch/arm/cpu/armv7/omap-common/hwinit-common.c b/arch/arm/cpu/armv7/omap-common/hwinit-common.c index 5cf4e2bb2c..f65705db12 100644 --- a/arch/arm/cpu/armv7/omap-common/hwinit-common.c +++ b/arch/arm/cpu/armv7/omap-common/hwinit-common.c @@ -31,9 +31,18 @@ #include <asm/arch/sys_proto.h> #include <asm/sizes.h> #include <asm/emif.h> +#include <asm/omap_common.h> DECLARE_GLOBAL_DATA_PTR; +/* + * This is used to verify if the configuration header + * was executed by rom code prior to control of transfer + * to the bootloader. SPL is responsible for saving and + * passing the boot_params pointer to the u-boot. + */ +struct omap_boot_parameters boot_params __attribute__ ((section(".data"))); + #ifdef CONFIG_SPL_BUILD /* * We use static variables because global data is not ready yet. @@ -41,12 +50,11 @@ DECLARE_GLOBAL_DATA_PTR; * We would not typically need to save these parameters in regular * U-Boot. This is needed only in SPL at the moment. */ -u32 omap_bootdevice = BOOT_DEVICE_MMC1; u32 omap_bootmode = MMCSD_MODE_FAT; u32 omap_boot_device(void) { - return omap_bootdevice; + return (u32) (boot_params.omap_bootdevice); } u32 omap_boot_mode(void) @@ -71,12 +79,16 @@ static void set_mux_conf_regs(void) set_muxconf_regs_essential(); break; case OMAP_INIT_CONTEXT_UBOOT_AFTER_SPL: +#ifdef CONFIG_SYS_ENABLE_PADS_ALL set_muxconf_regs_non_essential(); +#endif break; case OMAP_INIT_CONTEXT_UBOOT_FROM_NOR: case OMAP_INIT_CONTEXT_UBOOT_AFTER_CH: set_muxconf_regs_essential(); +#ifdef CONFIG_SYS_ENABLE_PADS_ALL set_muxconf_regs_non_essential(); +#endif break; } } @@ -103,6 +115,13 @@ void omap_rev_string(char *omap_rev_string) minor_rev); } +#ifdef CONFIG_SPL_BUILD +static void init_boot_params(void) +{ + boot_params_ptr = (u32 *) &boot_params; +} +#endif + /* * Routine: s_init * Description: Does early system init of watchdog, muxing, andclocks @@ -131,6 +150,7 @@ void s_init(void) #ifdef CONFIG_SPL_BUILD /* For regular u-boot sdram_init() is called from dram_init() */ sdram_init(); + init_boot_params(); #endif } diff --git a/arch/arm/cpu/armv7/omap-common/lowlevel_init.S b/arch/arm/cpu/armv7/omap-common/lowlevel_init.S index 68732987ae..35f38acf5d 100644 --- a/arch/arm/cpu/armv7/omap-common/lowlevel_init.S +++ b/arch/arm/cpu/armv7/omap-common/lowlevel_init.S @@ -27,7 +27,7 @@ */ #include <asm/arch/omap.h> -#ifdef CONFIG_SPL_BUILD + .global save_boot_params save_boot_params: /* @@ -43,21 +43,40 @@ save_boot_params: cmp r2, r0 blt 1f + /* + * store the boot params passed from rom code or saved + * and passed by SPL + */ + cmp r0, #0 + beq 1f + ldr r1, =boot_params + str r0, [r1] +#ifdef CONFIG_SPL_BUILD /* Store the boot device in omap_boot_device */ - ldr r2, [r0, #BOOT_DEVICE_OFFSET] @ r1 <- value of boot device + ldrb r2, [r0, #BOOT_DEVICE_OFFSET] @ r1 <- value of boot device and r2, #BOOT_DEVICE_MASK - ldr r3, =omap_bootdevice - str r2, [r3] @ omap_boot_device <- r1 + ldr r3, =boot_params + strb r2, [r3, #BOOT_DEVICE_OFFSET] @ omap_boot_device <- r1 + /* boot mode is passed only for devices that can raw/fat mode */ + cmp r2, #2 + blt 2f + cmp r2, #7 + bgt 2f /* Store the boot mode (raw/FAT) in omap_boot_mode */ ldr r2, [r0, #DEV_DESC_PTR_OFFSET] @ get the device descriptor ptr ldr r2, [r2, #DEV_DATA_PTR_OFFSET] @ get the pDeviceData ptr ldr r2, [r2, #BOOT_MODE_OFFSET] @ get the boot mode ldr r3, =omap_bootmode str r2, [r3] +#endif +2: + ldrb r2, [r0, #CH_FLAGS_OFFSET] + ldr r3, =boot_params + strb r2, [r3, #CH_FLAGS_OFFSET] 1: bx lr -#endif + .globl lowlevel_init lowlevel_init: diff --git a/arch/arm/cpu/armv7/omap-common/spl.c b/arch/arm/cpu/armv7/omap-common/spl.c index 2c59d2b36b..d6d7d65ecf 100644 --- a/arch/arm/cpu/armv7/omap-common/spl.c +++ b/arch/arm/cpu/armv7/omap-common/spl.c @@ -38,6 +38,7 @@ DECLARE_GLOBAL_DATA_PTR; +u32* boot_params_ptr = NULL; struct spl_image_info spl_image; /* Define global data structure pointer to it*/ @@ -92,12 +93,16 @@ void spl_parse_image_header(const struct image_header *header) static void jump_to_image_no_args(void) { - typedef void (*image_entry_noargs_t)(void)__attribute__ ((noreturn)); + typedef void (*image_entry_noargs_t)(u32 *)__attribute__ ((noreturn)); image_entry_noargs_t image_entry = (image_entry_noargs_t) spl_image.entry_point; debug("image entry point: 0x%X\n", spl_image.entry_point); - image_entry(); + /* Pass the saved boot_params from rom code */ +#if defined(CONFIG_VIRTIO) || defined(CONFIG_ZEBU) + image_entry = 0x80100000; +#endif + image_entry((u32 *)&boot_params_ptr); } void jump_to_image_no_args(void) __attribute__ ((noreturn)); |