diff options
Diffstat (limited to 'arch/arm/cpu/arm926ejs/spear/spl.c')
-rw-r--r-- | arch/arm/cpu/arm926ejs/spear/spl.c | 302 |
1 files changed, 0 insertions, 302 deletions
diff --git a/arch/arm/cpu/arm926ejs/spear/spl.c b/arch/arm/cpu/arm926ejs/spear/spl.c deleted file mode 100644 index b5b9945a87f..00000000000 --- a/arch/arm/cpu/arm926ejs/spear/spl.c +++ /dev/null @@ -1,302 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * Copyright (C) 2011 - * Heiko Schocher, DENX Software Engineering, hs@denx.de. - * - * Copyright (C) 2012 Stefan Roese <sr@denx.de> - */ - -#include <common.h> -#include <init.h> -#include <spl.h> -#include <version.h> -#include <asm/io.h> -#include <asm/ptrace.h> -#include <asm/arch/hardware.h> -#include <asm/arch/spr_defs.h> -#include <asm/arch/spr_misc.h> -#include <asm/arch/spr_syscntl.h> -#include <linux/mtd/st_smi.h> - -/* Reserve some space to store the BootROM's stack pointer during SPL operation. - * The BSS cannot be used for this purpose because it will be zeroed after - * having stored the pointer, so force the location to the data section. - */ -u32 bootrom_stash_sp __section(".data"); - -static void ddr_clock_init(void) -{ - struct misc_regs *misc_p = (struct misc_regs *)CONFIG_SPEAR_MISCBASE; - u32 clkenb, ddrpll; - - clkenb = readl(&misc_p->periph1_clken); - clkenb &= ~PERIPH_MPMCMSK; - clkenb |= PERIPH_MPMC_WE; - - /* Intentionally done twice */ - writel(clkenb, &misc_p->periph1_clken); - writel(clkenb, &misc_p->periph1_clken); - - ddrpll = readl(&misc_p->pll_ctr_reg); - ddrpll &= ~MEM_CLK_SEL_MSK; -#if (CONFIG_DDR_HCLK) - ddrpll |= MEM_CLK_HCLK; -#elif (CONFIG_DDR_2HCLK) - ddrpll |= MEM_CLK_2HCLK; -#elif (CONFIG_DDR_PLL2) - ddrpll |= MEM_CLK_PLL2; -#else -#error "please define one of CONFIG_DDR_(HCLK|2HCLK|PLL2)" -#endif - writel(ddrpll, &misc_p->pll_ctr_reg); - - writel(readl(&misc_p->periph1_clken) | PERIPH_MPMC_EN, - &misc_p->periph1_clken); -} - -static void mpmc_init_values(void) -{ - u32 i; - u32 *mpmc_reg_p = (u32 *)CONFIG_SPEAR_MPMCBASE; - u32 *mpmc_val_p = &mpmc_conf_vals[0]; - - for (i = 0; i < CONFIG_SPEAR_MPMCREGS; i++, mpmc_reg_p++, mpmc_val_p++) - writel(*mpmc_val_p, mpmc_reg_p); - - mpmc_reg_p = (u32 *)CONFIG_SPEAR_MPMCBASE; - - /* - * MPMC controller start - * MPMC waiting for DLLLOCKREG high - */ - writel(0x01000100, &mpmc_reg_p[7]); - - while (!(readl(&mpmc_reg_p[3]) & 0x10000)) - ; -} - -static void mpmc_init(void) -{ - /* Clock related settings for DDR */ - ddr_clock_init(); - - /* - * DDR pad register bits are different for different SoCs - * Compensation values are also handled separately - */ - plat_ddr_init(); - - /* Initialize mpmc register values */ - mpmc_init_values(); -} - -static void pll_init(void) -{ - struct misc_regs *misc_p = (struct misc_regs *)CONFIG_SPEAR_MISCBASE; - - /* Initialize PLLs */ - writel(FREQ_332, &misc_p->pll1_frq); - writel(0x1C0A, &misc_p->pll1_cntl); - writel(0x1C0E, &misc_p->pll1_cntl); - writel(0x1C06, &misc_p->pll1_cntl); - writel(0x1C0E, &misc_p->pll1_cntl); - - writel(FREQ_332, &misc_p->pll2_frq); - writel(0x1C0A, &misc_p->pll2_cntl); - writel(0x1C0E, &misc_p->pll2_cntl); - writel(0x1C06, &misc_p->pll2_cntl); - writel(0x1C0E, &misc_p->pll2_cntl); - - /* wait for pll locks */ - while (!(readl(&misc_p->pll1_cntl) & 0x1)) - ; - while (!(readl(&misc_p->pll2_cntl) & 0x1)) - ; -} - -static void mac_init(void) -{ - struct misc_regs *misc_p = (struct misc_regs *)CONFIG_SPEAR_MISCBASE; - - writel(readl(&misc_p->periph1_clken) & (~PERIPH_GMAC), - &misc_p->periph1_clken); - - writel(SYNTH23, &misc_p->gmac_synth_clk); - - switch (get_socrev()) { - case SOC_SPEAR600_AA: - case SOC_SPEAR600_AB: - case SOC_SPEAR600_BA: - case SOC_SPEAR600_BB: - case SOC_SPEAR600_BC: - case SOC_SPEAR600_BD: - writel(0x0, &misc_p->gmac_ctr_reg); - break; - - case SOC_SPEAR300: - case SOC_SPEAR310: - case SOC_SPEAR320: - writel(0x4, &misc_p->gmac_ctr_reg); - break; - } - - writel(readl(&misc_p->periph1_clken) | PERIPH_GMAC, - &misc_p->periph1_clken); - - writel(readl(&misc_p->periph1_rst) | PERIPH_GMAC, - &misc_p->periph1_rst); - writel(readl(&misc_p->periph1_rst) & (~PERIPH_GMAC), - &misc_p->periph1_rst); -} - -static void sys_init(void) -{ - struct misc_regs *misc_p = (struct misc_regs *)CONFIG_SPEAR_MISCBASE; - struct syscntl_regs *syscntl_p = - (struct syscntl_regs *)CONFIG_SPEAR_SYSCNTLBASE; - - /* Set system state to SLOW */ - writel(SLOW, &syscntl_p->scctrl); - writel(PLL_TIM << 3, &syscntl_p->scpllctrl); - - /* Initialize PLLs */ - pll_init(); - - /* - * Ethernet configuration - * To be done only if the tftp boot is not selected already - * Boot code ensures the correct configuration in tftp booting - */ - if (!tftp_boot_selected()) - mac_init(); - - writel(RTC_DISABLE | PLLTIMEEN, &misc_p->periph_clk_cfg); - writel(0x555, &misc_p->amba_clk_cfg); - - writel(NORMAL, &syscntl_p->scctrl); - - /* Wait for system to switch to normal mode */ - while (((readl(&syscntl_p->scctrl) >> MODE_SHIFT) & MODE_MASK) - != NORMAL) - ; -} - -/* - * get_socrev - * - * Get SoC Revision. - * @return SOC_SPEARXXX - */ -int get_socrev(void) -{ -#if defined(CONFIG_SPEAR600) - struct misc_regs *misc_p = (struct misc_regs *)CONFIG_SPEAR_MISCBASE; - u32 soc_id = readl(&misc_p->soc_core_id); - u32 pri_socid = (soc_id >> SOC_PRI_SHFT) & 0xFF; - u32 sec_socid = (soc_id >> SOC_SEC_SHFT) & 0xFF; - - if ((pri_socid == 'B') && (sec_socid == 'B')) - return SOC_SPEAR600_BB; - else if ((pri_socid == 'B') && (sec_socid == 'C')) - return SOC_SPEAR600_BC; - else if ((pri_socid == 'B') && (sec_socid == 'D')) - return SOC_SPEAR600_BD; - else if (soc_id == 0) - return SOC_SPEAR600_BA; - else - return SOC_SPEAR_NA; -#elif defined(CONFIG_SPEAR300) - return SOC_SPEAR300; -#elif defined(CONFIG_SPEAR310) - return SOC_SPEAR310; -#elif defined(CONFIG_SPEAR320) - return SOC_SPEAR320; -#endif -} - -/* - * SNOR (Serial NOR flash) related functions - */ -static void snor_init(void) -{ - struct smi_regs *const smicntl = - (struct smi_regs * const)CONFIG_SYS_SMI_BASE; - - /* Setting the fast mode values. SMI working at 166/4 = 41.5 MHz */ - writel(HOLD1 | FAST_MODE | BANK_EN | DSEL_TIME | PRESCAL4, - &smicntl->smi_cr1); -} - -u32 spl_boot_device(void) -{ - u32 mode = 0; - - if (usb_boot_selected()) { - mode = BOOT_DEVICE_BOOTROM; - } else if (snor_boot_selected()) { - /* SNOR-SMI initialization */ - snor_init(); - - mode = BOOT_DEVICE_NOR; - } - - return mode; -} - -void board_boot_order(u32 *spl_boot_list) -{ - spl_boot_list[0] = spl_boot_device(); - - /* - * If the main boot device (eg. NOR) is empty, try to jump back into the - * BootROM for USB boot process. - */ - if (USB_BOOT_SUPPORTED) - spl_boot_list[1] = BOOT_DEVICE_BOOTROM; -} - -void board_init_f(ulong dummy) -{ - struct misc_regs *misc_p = (struct misc_regs *)CONFIG_SPEAR_MISCBASE; - - /* Initialize PLLs */ - sys_init(); - - preloader_console_init(); - arch_cpu_init(); - - /* Enable IPs (release reset) */ - writel(PERIPH_RST_ALL, &misc_p->periph1_rst); - - /* Initialize MPMC */ - puts("Configure DDR\n"); - mpmc_init(); - spear_late_init(); -} - -/* - * In a few cases (Ethernet, UART or USB boot, we might want to go back into the - * BootROM code right after having initialized a few components like the DRAM). - * The following function is called from SPL common code (board_init_r). - */ -int board_return_to_bootrom(struct spl_image_info *spl_image, - struct spl_boot_device *bootdev) -{ - /* - * Retrieve the BootROM's stack pointer and jump back to the start of - * the SPL, where we can easily branch back into the BootROM. Don't do - * it right here because SPL might be compiled in Thumb mode while the - * BootROM expects ARM mode. - */ - asm volatile ("ldr r0, =bootrom_stash_sp;" - "ldr r0, [r0];" - "mov sp, r0;" -#if defined(CONFIG_SPL_SYS_THUMB_BUILD) - "blx back_to_bootrom;" -#else - "bl back_to_bootrom;" -#endif - ); - - return 0; -} |