armv7:TI: Add <asm/ti-common/sys_proto.h> and migrate omap_hw_init_context

The omap_hw_init_context function (and assorted helpers) is the same for
all OMAP-derived parts as when CHSETTINGS are used, that's the same and
our DDR base is also always the same.  In order to make this common we
simply need to update the names of the define for DDR address space
which is also common.

Cc: Sricharan R. <r.sricharan@ti.com>
Cc: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Tom Rini <trini@ti.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>

7 files changed, 77 insertions, 112 deletions

diff --git a/arch/arm/cpu/armv7/omap-common/hwinit-common.c b/arch/arm/cpu/armv7/omap-common/hwinit-common.c
index 8ebc0ce..132454c 100644
--- a/arch/arm/cpu/armv7/omap-common/hwinit-common.c
+++ b/arch/arm/cpu/armv7/omap-common/hwinit-common.c
@@ -194,8 +194,8 @@ u32 omap_sdram_size(void)
 		addr = section & EMIF_SYS_ADDR_MASK;
 
 		/* See if the address is valid */
-		if ((addr >= DRAM_ADDR_SPACE_START) &&
-		    (addr < DRAM_ADDR_SPACE_END)) {
+		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;
diff --git a/arch/arm/include/asm/arch-am33xx/sys_proto.h b/arch/arm/include/asm/arch-am33xx/sys_proto.h
index 91ff2ad..33a82fc 100644
--- a/arch/arm/include/asm/arch-am33xx/sys_proto.h
+++ b/arch/arm/include/asm/arch-am33xx/sys_proto.h
@@ -11,6 +11,7 @@
 #ifndef _SYS_PROTO_H_
 #define _SYS_PROTO_H_
 #include <linux/mtd/omap_gpmc.h>
+#include <asm/ti-common/sys_proto.h>
 #include <asm/arch/cpu.h>
 
 #define BOARD_REV_ID	0x0
diff --git a/arch/arm/include/asm/arch-omap4/sys_proto.h b/arch/arm/include/asm/arch-omap4/sys_proto.h
index 80172f3..83d858f 100644
--- a/arch/arm/include/asm/arch-omap4/sys_proto.h
+++ b/arch/arm/include/asm/arch-omap4/sys_proto.h
@@ -14,6 +14,7 @@
 #include <asm/omap_common.h>
 #include <linux/mtd/omap_gpmc.h>
 #include <asm/arch/mux_omap4.h>
+#include <asm/ti-common/sys_proto.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -53,54 +54,4 @@ int omap_vc_bypass_send_value(u8 sa, u8 reg_addr, u8 reg_data);
 u32 warm_reset(void);
 void force_emif_self_refresh(void);
 void setup_warmreset_time(void);
-
-static inline u32 running_from_sdram(void)
-{
-	u32 pc;
-	asm volatile ("mov %0, pc" : "=r" (pc));
-	return ((pc >= OMAP44XX_DRAM_ADDR_SPACE_START) &&
-	    (pc < OMAP44XX_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 ((gd->arch.omap_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
-}
-
 #endif
diff --git a/arch/arm/include/asm/arch-omap5/omap.h b/arch/arm/include/asm/arch-omap5/omap.h
index ce13ca9..b9600cf 100644
--- a/arch/arm/include/asm/arch-omap5/omap.h
+++ b/arch/arm/include/asm/arch-omap5/omap.h
@@ -23,11 +23,6 @@
 #define OMAP54XX_L4_WKUP_BASE	0x4Ae00000
 #define OMAP54XX_L4_PER_BASE	0x48000000
 
-#define OMAP54XX_DRAM_ADDR_SPACE_START	0x80000000
-#define OMAP54XX_DRAM_ADDR_SPACE_END	0xFFFFFFFF
-#define DRAM_ADDR_SPACE_START	OMAP54XX_DRAM_ADDR_SPACE_START
-#define DRAM_ADDR_SPACE_END	OMAP54XX_DRAM_ADDR_SPACE_END
-
 /* CONTROL ID CODE */
 #define CONTROL_CORE_ID_CODE	0x4A002204
 #define CONTROL_WKUP_ID_CODE	0x4AE0C204
diff --git a/arch/arm/include/asm/arch-omap5/sys_proto.h b/arch/arm/include/asm/arch-omap5/sys_proto.h
index bf12c73..1038303 100644
--- a/arch/arm/include/asm/arch-omap5/sys_proto.h
+++ b/arch/arm/include/asm/arch-omap5/sys_proto.h
@@ -14,6 +14,7 @@
 #include <asm/omap_common.h>
 #include <linux/mtd/omap_gpmc.h>
 #include <asm/arch/clock.h>
+#include <asm/ti-common/sys_proto.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -56,55 +57,6 @@ void get_ioregs(const struct ctrl_ioregs **regs);
 void srcomp_enable(void);
 void setup_warmreset_time(void);
 
-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 ((gd->arch.omap_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 div_round_up(u32 num, u32 den)
 {
 	return (num + den - 1)/den;
diff --git a/arch/arm/include/asm/omap_common.h b/arch/arm/include/asm/omap_common.h
index d1dd4b5..d1344ee 100644
--- a/arch/arm/include/asm/omap_common.h
+++ b/arch/arm/include/asm/omap_common.h
@@ -576,12 +576,6 @@ s8 abb_setup_ldovbb(u32 fuse, u32 ldovbb);
 
 void usb_fake_mac_from_die_id(u32 *id);
 
-/* HW Init Context */
-#define OMAP_INIT_CONTEXT_SPL			0
-#define OMAP_INIT_CONTEXT_UBOOT_FROM_NOR	1
-#define OMAP_INIT_CONTEXT_UBOOT_AFTER_SPL	2
-#define OMAP_INIT_CONTEXT_UBOOT_AFTER_CH	3
-
 /* ABB */
 #define OMAP_ABB_NOMINAL_OPP		0
 #define OMAP_ABB_FAST_OPP		1
diff --git a/arch/arm/include/asm/ti-common/sys_proto.h b/arch/arm/include/asm/ti-common/sys_proto.h
new file mode 100644
index 0000000..d3ab75f
--- /dev/null
+++ b/arch/arm/include/asm/ti-common/sys_proto.h
@@ -0,0 +1,72 @@
+/*
+ * (C) Copyright 2014
+ * Texas Instruments, <www.ti.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+#ifndef _TI_COMMON_SYS_PROTO_H_
+#define _TI_COMMON_SYS_PROTO_H_
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#ifdef CONFIG_OMAP_COMMON
+#define TI_ARMV7_DRAM_ADDR_SPACE_START	0x80000000
+#define TI_ARMV7_DRAM_ADDR_SPACE_END	0xFFFFFFFF
+
+#define OMAP_INIT_CONTEXT_SPL			0
+#define OMAP_INIT_CONTEXT_UBOOT_FROM_NOR	1
+#define OMAP_INIT_CONTEXT_UBOOT_AFTER_SPL	2
+#define OMAP_INIT_CONTEXT_UBOOT_AFTER_CH	3
+
+static inline u32 running_from_sdram(void)
+{
+	u32 pc;
+	asm volatile ("mov %0, pc" : "=r" (pc));
+	return ((pc >= TI_ARMV7_DRAM_ADDR_SPACE_START) &&
+	    (pc < TI_ARMV7_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 ((gd->arch.omap_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
+}
+#endif
+
+#endif