ARM: omap: merge GPMC initialization code for all platform

GPMC controller on TI's OMAP SoC is general purpose controller to interface
with different types of external devices like;
 - parallel NOR flash
 - parallel NAND flash
 - OneNand flash
 - SDR RAM
 - Ethernet Devices like LAN9220

Though GPMC configurations may be different for each platform depending on
clock-frequency and external device interfacing with controller. But
initialization sequence remains common across all platfoms.

Thus this patch merges gpmc_init() scattered in different arch-xx/mem.c
files into single omap-common/mem-common.c

However, actual platforms specific register config values are still sourced
from corresponding platform specific headers like;
 AM33xx: arch/arm/include/asm/arch-am33xx/mem.h
 OMAP3:  arch/arm/include/asm/arch-omap3/mem.h
 OMAP4:  arch/arm/include/asm/arch-omap4/mem.h
 OMAP4:  arch/arm/include/asm/arch-omap5/mem.h

Also, CONFIG_xx passed by board-profile decide config for which set of macros
need to be used for initialization
 CONFIG_NAND:    initialize GPMC for NAND device
 CONFIG_NOR:     initialize GPMC for NOR device
 CONFIG_ONENAND: initialize GPMC for ONENAND device

Signed-off-by: Pekon Gupta <pekon@ti.com>
[trini: define GPMC_SIZE_256M for omap3]
Signed-off-by: Tom Rini <trini@ti.com>

2 files changed, 0 insertions, 99 deletions

diff --git a/arch/arm/cpu/armv7/am33xx/Makefile b/arch/arm/cpu/armv7/am33xx/Makefile
index 5566310..aae3f09 100644
--- a/arch/arm/cpu/armv7/am33xx/Makefile
+++ b/arch/arm/cpu/armv7/am33xx/Makefile
@@ -14,7 +14,6 @@ endif
 
 obj-$(CONFIG_TI816X)	+= clock_ti816x.o
 obj-y	+= sys_info.o
-obj-y	+= mem.o
 obj-y	+= ddr.o
 obj-y	+= emif4.o
 obj-y	+= board.o
diff --git a/arch/arm/cpu/armv7/am33xx/mem.c b/arch/arm/cpu/armv7/am33xx/mem.c
deleted file mode 100644
index 56c9e7d..0000000
--- a/arch/arm/cpu/armv7/am33xx/mem.c
+++ /dev/null
@@ -1,98 +0,0 @@
-/*
- * (C) Copyright 2010
- * Texas Instruments, <www.ti.com>
- *
- * Author :
- *     Mansoor Ahamed <mansoor.ahamed@ti.com>
- *
- * Initial Code from:
- *     Manikandan Pillai <mani.pillai@ti.com>
- *     Richard Woodruff <r-woodruff2@ti.com>
- *     Syed Mohammed Khasim <khasim@ti.com>
- *
- * SPDX-License-Identifier:	GPL-2.0+
- */
-
-#include <common.h>
-#include <asm/io.h>
-#include <asm/arch/cpu.h>
-#include <asm/arch/mem.h>
-#include <asm/arch/sys_proto.h>
-#include <command.h>
-
-struct gpmc *gpmc_cfg;
-
-
-void enable_gpmc_cs_config(const u32 *gpmc_config, struct gpmc_cs *cs, u32 base,
-			u32 size)
-{
-	writel(0, &cs->config7);
-	sdelay(1000);
-	/* Delay for settling */
-	writel(gpmc_config[0], &cs->config1);
-	writel(gpmc_config[1], &cs->config2);
-	writel(gpmc_config[2], &cs->config3);
-	writel(gpmc_config[3], &cs->config4);
-	writel(gpmc_config[4], &cs->config5);
-	writel(gpmc_config[5], &cs->config6);
-	/* Enable the config */
-	writel((((size & 0xF) << 8) | ((base >> 24) & 0x3F) |
-		(1 << 6)), &cs->config7);
-	sdelay(2000);
-}
-
-/*****************************************************
- * gpmc_init(): init gpmc bus
- * Init GPMC for x16, MuxMode (SDRAM in x32).
- * This code can only be executed from SRAM or SDRAM.
- *****************************************************/
-void gpmc_init(void)
-{
-	/* putting a blanket check on GPMC based on ZeBu for now */
-	gpmc_cfg = (struct gpmc *)GPMC_BASE;
-#if defined(CONFIG_NOR)
-/* configure GPMC for NOR */
-	const u32 gpmc_regs[GPMC_MAX_REG] = {	STNOR_GPMC_CONFIG1,
-						STNOR_GPMC_CONFIG2,
-						STNOR_GPMC_CONFIG3,
-						STNOR_GPMC_CONFIG4,
-						STNOR_GPMC_CONFIG5,
-						STNOR_GPMC_CONFIG6,
-						STNOR_GPMC_CONFIG7
-						};
-	u32 size = GPMC_SIZE_16M;
-	u32 base = CONFIG_SYS_FLASH_BASE;
-#elif defined(CONFIG_NAND)
-/* configure GPMC for NAND */
-	const u32  gpmc_regs[GPMC_MAX_REG] = {	M_NAND_GPMC_CONFIG1,
-						M_NAND_GPMC_CONFIG2,
-						M_NAND_GPMC_CONFIG3,
-						M_NAND_GPMC_CONFIG4,
-						M_NAND_GPMC_CONFIG5,
-						M_NAND_GPMC_CONFIG6,
-						0
-						};
-	u32 size = GPMC_SIZE_256M;
-	u32 base = CONFIG_SYS_NAND_BASE;
-#else
-	const u32 gpmc_regs[GPMC_MAX_REG] = { 0, 0, 0, 0, 0, 0, 0 };
-	u32 size = 0;
-	u32 base = 0;
-#endif
-	/* global settings */
-	writel(0x00000008, &gpmc_cfg->sysconfig);
-	writel(0x00000000, &gpmc_cfg->irqstatus);
-	writel(0x00000000, &gpmc_cfg->irqenable);
-#ifdef CONFIG_NOR
-	writel(0x00000200, &gpmc_cfg->config);
-#else
-	writel(0x00000012, &gpmc_cfg->config);
-#endif
-	/*
-	 * Disable the GPMC0 config set by ROM code
-	 */
-	writel(0, &gpmc_cfg->cs[0].config7);
-	sdelay(1000);
-	/* enable chip-select specific configurations */
-	enable_gpmc_cs_config(gpmc_regs, &gpmc_cfg->cs[0], base, size);
-}