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Diffstat (limited to 'arch/arm/include/asm/arch-omap5/sys_proto.h')
-rw-r--r--arch/arm/include/asm/arch-omap5/sys_proto.h122
1 files changed, 122 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-omap5/sys_proto.h b/arch/arm/include/asm/arch-omap5/sys_proto.h
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+++ b/arch/arm/include/asm/arch-omap5/sys_proto.h
@@ -0,0 +1,122 @@
+/*
+ * (C) Copyright 2010
+ * Texas Instruments, <www.ti.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef _SYS_PROTO_H_
+#define _SYS_PROTO_H_
+
+#include <asm/arch/omap.h>
+#include <asm/io.h>
+#include <asm/arch/clocks.h>
+#include <asm/omap_common.h>
+#include <asm/arch/mux_omap5.h>
+#include <asm/arch/clocks.h>
+
+struct omap_sysinfo {
+ char *board_string;
+};
+extern const struct omap_sysinfo sysinfo;
+
+void gpmc_init(void);
+void watchdog_init(void);
+u32 get_device_type(void);
+void do_set_mux(u32 base, struct pad_conf_entry const *array, int size);
+void set_muxconf_regs_essential(void);
+void set_muxconf_regs_non_essential(void);
+void sr32(void *, u32, u32, u32);
+u32 wait_on_value(u32, u32, void *, u32);
+void sdelay(unsigned long);
+void omap_rev_string(char *omap_rev_string);
+void setup_clocks_for_console(void);
+void prcm_init(void);
+void bypass_dpll(u32 *const base);
+void freq_update_core(void);
+u32 get_sys_clk_freq(void);
+u32 omap5_ddr_clk(void);
+void cancel_out(u32 *num, u32 *den, u32 den_limit);
+void sdram_init(void);
+u32 omap_sdram_size(void);
+u32 cortex_rev(void);
+void init_omap_revision(void);
+void do_io_settings(void);
+
+/*
+ * This is used to verify if the configuration header
+ * was executed by Romcode prior to control of transfer
+ * to the bootloader. SPL is responsible for saving and
+ * passing this to the u-boot.
+ */
+extern struct omap_boot_parameters boot_params;
+
+static inline u32 running_from_sdram(void)
+{
+ u32 pc;
+ asm volatile ("mov %0, pc" : "=r" (pc));
+ return ((pc >= OMAP54XX_DRAM_ADDR_SPACE_START) &&
+ (pc < OMAP54XX_DRAM_ADDR_SPACE_END));
+}
+
+static inline u8 uboot_loaded_by_spl(void)
+{
+ /*
+ * u-boot can be running from sdram either because of configuration
+ * Header or by SPL. If because of CH, then the romcode sets the
+ * CHSETTINGS executed bit to true in the boot parameter structure that
+ * it passes to the bootloader.This parameter is stored in the ch_flags
+ * variable by both SPL and u-boot.Check out for CHSETTINGS, which is a
+ * mandatory section if CH is present.
+ */
+ if ((boot_params.ch_flags) & (CH_FLAGS_CHSETTINGS))
+ return 0;
+ else
+ return running_from_sdram();
+}
+/*
+ * The basic hardware init of OMAP(s_init()) can happen in 4
+ * different contexts:
+ * 1. SPL running from SRAM
+ * 2. U-Boot running from FLASH
+ * 3. Non-XIP U-Boot loaded to SDRAM by SPL
+ * 4. Non-XIP U-Boot loaded to SDRAM by ROM code using the
+ * Configuration Header feature
+ *
+ * This function finds this context.
+ * Defining as inline may help in compiling out unused functions in SPL
+ */
+static inline u32 omap_hw_init_context(void)
+{
+#ifdef CONFIG_SPL_BUILD
+ return OMAP_INIT_CONTEXT_SPL;
+#else
+ if (uboot_loaded_by_spl())
+ return OMAP_INIT_CONTEXT_UBOOT_AFTER_SPL;
+ else if (running_from_sdram())
+ return OMAP_INIT_CONTEXT_UBOOT_AFTER_CH;
+ else
+ return OMAP_INIT_CONTEXT_UBOOT_FROM_NOR;
+#endif
+}
+
+static inline u32 omap_revision(void)
+{
+ extern u32 *const omap5_revision;
+ return *omap5_revision;
+}
+
+#endif