--- /dev/null
+/*
+ *
+ * Common functions for OMAP4/5 based boards
+ *
+ * (C) Copyright 2010
+ * Texas Instruments, <www.ti.com>
+ *
+ * Author :
+ * Aneesh V <aneesh@ti.com>
+ * Steve Sakoman <steve@sakoman.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+#include <common.h>
+#include <spl.h>
+#include <asm/arch/sys_proto.h>
+#include <linux/sizes.h>
+#include <asm/emif.h>
+#include <asm/omap_common.h>
+#include <linux/compiler.h>
+#include <asm/cache.h>
+#include <asm/system.h>
+
+#define ARMV7_DCACHE_WRITEBACK 0xe
+#define ARMV7_DOMAIN_CLIENT 1
+#define ARMV7_DOMAIN_MASK (0x3 << 0)
+
+DECLARE_GLOBAL_DATA_PTR;
+
+void do_set_mux(u32 base, struct pad_conf_entry const *array, int size)
+{
+ int i;
+ struct pad_conf_entry *pad = (struct pad_conf_entry *) array;
+
+ for (i = 0; i < size; i++, pad++)
+ writew(pad->val, base + pad->offset);
+}
+
+static void set_mux_conf_regs(void)
+{
+ switch (omap_hw_init_context()) {
+ case OMAP_INIT_CONTEXT_SPL:
+ set_muxconf_regs_essential();
+ break;
+ case OMAP_INIT_CONTEXT_UBOOT_AFTER_SPL:
+ break;
+ case OMAP_INIT_CONTEXT_UBOOT_FROM_NOR:
+ case OMAP_INIT_CONTEXT_UBOOT_AFTER_CH:
+ set_muxconf_regs_essential();
+ break;
+ }
+}
+
+u32 cortex_rev(void)
+{
+
+ unsigned int rev;
+
+ /* Read Main ID Register (MIDR) */
+ asm ("mrc p15, 0, %0, c0, c0, 0" : "=r" (rev));
+
+ return rev;
+}
+
+static void omap_rev_string(void)
+{
+ u32 omap_rev = omap_revision();
+ u32 soc_variant = (omap_rev & 0xF0000000) >> 28;
+ u32 omap_variant = (omap_rev & 0xFFFF0000) >> 16;
+ u32 major_rev = (omap_rev & 0x00000F00) >> 8;
+ u32 minor_rev = (omap_rev & 0x000000F0) >> 4;
+
+ if (soc_variant)
+ printf("OMAP");
+ else
+ printf("DRA");
+ printf("%x ES%x.%x\n", omap_variant, major_rev,
+ minor_rev);
+}
+
+#ifdef CONFIG_SPL_BUILD
+void spl_display_print(void)
+{
+ omap_rev_string();
+}
+#endif
+
+void __weak srcomp_enable(void)
+{
+}
+
+#ifdef CONFIG_ARCH_CPU_INIT
+/*
+ * SOC specific cpu init
+ */
+int arch_cpu_init(void)
+{
+ save_omap_boot_params();
+ return 0;
+}
+#endif /* CONFIG_ARCH_CPU_INIT */
+
+/*
+ * Routine: s_init
+ * Description: Does early system init of watchdog, muxing, andclocks
+ * Watchdog disable is done always. For the rest what gets done
+ * depends on the boot mode in which this function is executed
+ * 1. s_init of SPL running from SRAM
+ * 2. s_init of U-Boot running from FLASH
+ * 3. s_init of U-Boot loaded to SDRAM by SPL
+ * 4. s_init of U-Boot loaded to SDRAM by ROM code using the
+ * Configuration Header feature
+ * Please have a look at the respective functions to see what gets
+ * done in each of these cases
+ * This function is called with SRAM stack.
+ */
+void s_init(void)
+{
+ /*
+ * Save the boot parameters passed from romcode.
+ * We cannot delay the saving further than this,
+ * to prevent overwrites.
+ */
+#ifdef CONFIG_SPL_BUILD
+ save_omap_boot_params();
+#endif
+ init_omap_revision();
+ hw_data_init();
+
+#ifdef CONFIG_SPL_BUILD
+ if (warm_reset() && (omap_revision() <= OMAP5430_ES1_0))
+ force_emif_self_refresh();
+#endif
+ watchdog_init();
+ set_mux_conf_regs();
+#ifdef CONFIG_SPL_BUILD
+ srcomp_enable();
+ setup_clocks_for_console();
+
+ gd = &gdata;
+
+ preloader_console_init();
+ do_io_settings();
+#endif
+ prcm_init();
+#ifdef CONFIG_SPL_BUILD
+ /* For regular u-boot sdram_init() is called from dram_init() */
+ sdram_init();
+#endif
+}
+
+/*
+ * Routine: wait_for_command_complete
+ * Description: Wait for posting to finish on watchdog
+ */
+void wait_for_command_complete(struct watchdog *wd_base)
+{
+ int pending = 1;
+ do {
+ pending = readl(&wd_base->wwps);
+ } while (pending);
+}
+
+/*
+ * Routine: watchdog_init
+ * Description: Shut down watch dogs
+ */
+void watchdog_init(void)
+{
+ struct watchdog *wd2_base = (struct watchdog *)WDT2_BASE;
+
+ writel(WD_UNLOCK1, &wd2_base->wspr);
+ wait_for_command_complete(wd2_base);
+ writel(WD_UNLOCK2, &wd2_base->wspr);
+}
+
+
+/*
+ * This function finds the SDRAM size available in the system
+ * based on DMM section configurations
+ * This is needed because the size of memory installed may be
+ * different on different versions of the board
+ */
+u32 omap_sdram_size(void)
+{
+ u32 section, i, valid;
+ u64 sdram_start = 0, sdram_end = 0, addr,
+ size, total_size = 0, trap_size = 0;
+
+ for (i = 0; i < 4; i++) {
+ section = __raw_readl(DMM_BASE + i*4);
+ valid = (section & EMIF_SDRC_ADDRSPC_MASK) >>
+ (EMIF_SDRC_ADDRSPC_SHIFT);
+ addr = section & EMIF_SYS_ADDR_MASK;
+
+ /* See if the address is valid */
+ if ((addr >= DRAM_ADDR_SPACE_START) &&
+ (addr < DRAM_ADDR_SPACE_END)) {
+ size = ((section & EMIF_SYS_SIZE_MASK) >>
+ EMIF_SYS_SIZE_SHIFT);
+ size = 1 << size;
+ size *= SZ_16M;
+
+ if (valid != DMM_SDRC_ADDR_SPC_INVALID) {
+ if (!sdram_start || (addr < sdram_start))
+ sdram_start = addr;
+ if (!sdram_end || ((addr + size) > sdram_end))
+ sdram_end = addr + size;
+ } else {
+ trap_size = size;
+ }
+
+ }
+
+ }
+ total_size = (sdram_end - sdram_start) - (trap_size);
+
+ return total_size;
+}
+
+
+/*
+ * Routine: dram_init
+ * Description: sets uboots idea of sdram size
+ */
+int dram_init(void)
+{
+ sdram_init();
+ gd->ram_size = omap_sdram_size();
+ return 0;
+}
+
+/*
+ * Print board information
+ */
+int checkboard(void)
+{
+ puts(sysinfo.board_string);
+ return 0;
+}
+
+/*
+ * get_device_type(): tell if GP/HS/EMU/TST
+ */
+u32 get_device_type(void)
+{
+ return (readl((*ctrl)->control_status) &
+ (DEVICE_TYPE_MASK)) >> DEVICE_TYPE_SHIFT;
+}
+
+#if defined(CONFIG_DISPLAY_CPUINFO)
+/*
+ * Print CPU information
+ */
+int print_cpuinfo(void)
+{
+ puts("CPU : ");
+ omap_rev_string();
+
+ return 0;
+}
+#endif
+
+#ifndef CONFIG_SYS_DCACHE_OFF
+void enable_caches(void)
+{
+ /* Enable D-cache. I-cache is already enabled in start.S */
+ dcache_enable();
+}
+
+void dram_bank_mmu_setup(int bank)
+{
+ bd_t *bd = gd->bd;
+ int i;
+
+ u32 start = bd->bi_dram[bank].start >> 20;
+ u32 size = bd->bi_dram[bank].size >> 20;
+ u32 end = start + size;
+
+ debug("%s: bank: %d\n", __func__, bank);
+ for (i = start; i < end; i++)
+ set_section_dcache(i, ARMV7_DCACHE_WRITEBACK);
+
+}
+
+void arm_init_domains(void)
+{
+ u32 reg;
+
+ reg = get_dacr();
+ /*
+ * Set DOMAIN to client access so that all permissions
+ * set in pagetables are validated by the mmu.
+ */
+ reg &= ~ARMV7_DOMAIN_MASK;
+ reg |= ARMV7_DOMAIN_CLIENT;
+ set_dacr(reg);
+}
+#endif
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