1 files changed, 296 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/hwinit-common.c b/arch/arm/mach-omap2/hwinit-common.c
new file mode 100644
index 0000000..f317293
--- /dev/null
+++ b/arch/arm/mach-omap2/hwinit-common.c
@@ -0,0 +1,296 @@
+/*
+ *
+ * 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/system.h>
+
+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();
+		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();
+		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;
+
+	const char *sec_s;
+
+	switch (get_device_type()) {
+	case TST_DEVICE:
+		sec_s = "TST";
+		break;
+	case EMU_DEVICE:
+		sec_s = "EMU";
+		break;
+	case HS_DEVICE:
+		sec_s = "HS";
+		break;
+	case GP_DEVICE:
+		sec_s = "GP";
+		break;
+	default:
+		sec_s = "?";
+	}
+
+	if (soc_variant)
+		printf("OMAP");
+	else
+		printf("DRA");
+	printf("%x-%s ES%x.%x\n", omap_variant, sec_s, major_rev, minor_rev);
+}
+
+#ifdef CONFIG_SPL_BUILD
+void spl_display_print(void)
+{
+	omap_rev_string();
+}
+#endif
+
+void __weak srcomp_enable(void)
+{
+}
+
+/**
+ * do_board_detect() - Detect board description
+ *
+ * Function to detect board description. This is expected to be
+ * overridden in the SoC family board file where desired.
+ */
+void __weak do_board_detect(void)
+{
+}
+
+/**
+ * vcores_init() - Assign omap_vcores based on board
+ *
+ * Function to pick the vcores based on board. This is expected to be
+ * overridden in the SoC family board file where desired.
+ */
+void __weak vcores_init(void)
+{
+}
+
+void s_init(void)
+{
+}
+
+/**
+ * early_system_init - Does Early system initialization.
+ *
+ * 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 when
+ *   1. SPL running from SRAM
+ *   2. U-Boot running from FLASH
+ *   3. U-Boot loaded to SDRAM by SPL
+ *   4. 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 early_system_init(void)
+{
+	init_omap_revision();
+	hw_data_init();
+
+#ifdef CONFIG_SPL_BUILD
+	if (warm_reset())
+		force_emif_self_refresh();
+#endif
+	watchdog_init();
+	set_mux_conf_regs();
+#ifdef CONFIG_SPL_BUILD
+	srcomp_enable();
+	do_io_settings();
+#endif
+	setup_early_clocks();
+	do_board_detect();
+	vcores_init();
+	prcm_init();
+}
+
+#ifdef CONFIG_SPL_BUILD
+void board_init_f(ulong dummy)
+{
+	early_system_init();
+#ifdef CONFIG_BOARD_EARLY_INIT_F
+	board_early_init_f();
+#endif
+	/* For regular u-boot sdram_init() is called from dram_init() */
+	sdram_init();
+}
+#endif
+
+int arch_cpu_init_dm(void)
+{
+	early_system_init();
+	return 0;
+}
+
+/*
+ * 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, trap_start = 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 >= TI_ARMV7_DRAM_ADDR_SPACE_START) &&
+		    (addr < TI_ARMV7_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;
+				trap_start = addr;
+			}
+		}
+	}
+
+	if ((trap_start >= sdram_start) && (trap_start < sdram_end))
+		total_size = (sdram_end - sdram_start) - (trap_size);
+	else
+		total_size = sdram_end - sdram_start;
+
+	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