i.MX28: Move SPL to arch/arm/cpu/arm926ejs/mx28

This moves SPL to common location so it can be reused by multiple boards. Also,
this commit adjusts M28 SoM to avoid breakage due to the move.

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Detlev Zundel <dzu@denx.de>
Cc: Stefano Babic <sbabic@denx.de>

1 files changed, 0 insertions, 240 deletions

diff --git a/board/denx/m28evk/mem_init.c b/board/denx/m28evk/mem_init.c
deleted file mode 100644
index 17d1f9b6a..000000000
--- a/board/denx/m28evk/mem_init.c
+++ /dev/null
@@ -1,240 +0,0 @@
-/*
- * Freescale i.MX28 RAM init
- *
- * Copyright (C) 2011 Marek Vasut <marek.vasut@gmail.com>
- * on behalf of DENX Software Engineering GmbH
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * 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
- */
-
-#include <common.h>
-#include <config.h>
-#include <asm/io.h>
-#include <asm/arch/iomux-mx28.h>
-#include <asm/arch/imx-regs.h>
-
-#include "m28_init.h"
-
-uint32_t dram_vals[] = {
-	0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,
-	0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,
-	0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,
-	0x00000000, 0x00000000, 0x00000100, 0x00000000, 0x00000000,
-	0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,
-	0x00000000, 0x00010101, 0x01010101, 0x000f0f01, 0x0f02020a,
-	0x00000000, 0x00010101, 0x00000100, 0x00000100, 0x00000000,
-	0x00000002, 0x01010000, 0x05060302, 0x06005003, 0x0a0000c8,
-	0x02009c40, 0x0000030c, 0x0036a609, 0x031a0612, 0x02030202,
-	0x00c8001c, 0x00000000, 0x00000000, 0x00012100, 0xffff0303,
-	0x00012100, 0xffff0303, 0x00012100, 0xffff0303, 0x00012100,
-	0xffff0303, 0x00000003, 0x00000000, 0x00000000, 0x00000000,
-	0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,
-	0x00000000, 0x00000612, 0x01000F02, 0x06120612, 0x00000200,
-	0x00020007, 0xf5014b27, 0xf5014b27, 0xf5014b27, 0xf5014b27,
-	0x07000300, 0x07000300, 0x07000300, 0x07000300, 0x00000006,
-	0x00000000, 0x00000000, 0x01000000, 0x01020408, 0x08040201,
-	0x000f1133, 0x00000000, 0x00001f04, 0x00001f04, 0x00001f04,
-	0x00001f04, 0x00001f04, 0x00001f04, 0x00001f04, 0x00001f04,
-	0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,
-	0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,
-	0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,
-	0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,
-	0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,
-	0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,
-	0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,
-	0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,
-	0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,
-	0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,
-	0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,
-	0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,
-	0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,
-	0x00000000, 0x00000000, 0x00010000, 0x00020304, 0x00000004,
-	0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,
-	0x00000000, 0x01010000, 0x01000000, 0x03030000, 0x00010303,
-	0x01020202, 0x00000000, 0x02040303, 0x21002103, 0x00061200,
-	0x06120612, 0x04320432, 0x04320432, 0x00040004, 0x00040004,
-	0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00010001
-};
-
-void init_m28_200mhz_ddr2(void)
-{
-	int i;
-
-	for (i = 0; i < ARRAY_SIZE(dram_vals); i++)
-		writel(dram_vals[i], MXS_DRAM_BASE + (4 * i));
-}
-
-void mx28_mem_init_clock(void)
-{
-	struct mx28_clkctrl_regs *clkctrl_regs =
-		(struct mx28_clkctrl_regs *)MXS_CLKCTRL_BASE;
-
-	/* Gate EMI clock */
-	writel(CLKCTRL_FRAC0_CLKGATEEMI,
-		&clkctrl_regs->hw_clkctrl_frac0_set);
-
-	/* EMI = 205MHz */
-	writel(CLKCTRL_FRAC0_EMIFRAC_MASK,
-		&clkctrl_regs->hw_clkctrl_frac0_set);
-	writel((0x2a << CLKCTRL_FRAC0_EMIFRAC_OFFSET) &
-		CLKCTRL_FRAC0_EMIFRAC_MASK,
-		&clkctrl_regs->hw_clkctrl_frac0_clr);
-
-	/* Ungate EMI clock */
-	writel(CLKCTRL_FRAC0_CLKGATEEMI,
-		&clkctrl_regs->hw_clkctrl_frac0_clr);
-
-	early_delay(11000);
-
-	writel((2 << CLKCTRL_EMI_DIV_EMI_OFFSET) |
-		(1 << CLKCTRL_EMI_DIV_XTAL_OFFSET),
-		&clkctrl_regs->hw_clkctrl_emi);
-
-	/* Unbypass EMI */
-	writel(CLKCTRL_CLKSEQ_BYPASS_EMI,
-		&clkctrl_regs->hw_clkctrl_clkseq_clr);
-
-	early_delay(10000);
-}
-
-void mx28_mem_setup_cpu_and_hbus(void)
-{
-	struct mx28_clkctrl_regs *clkctrl_regs =
-		(struct mx28_clkctrl_regs *)MXS_CLKCTRL_BASE;
-
-	/* CPU = 454MHz and ungate CPU clock */
-	clrsetbits_le32(&clkctrl_regs->hw_clkctrl_frac0,
-		CLKCTRL_FRAC0_CPUFRAC_MASK | CLKCTRL_FRAC0_CLKGATECPU,
-		19 << CLKCTRL_FRAC0_CPUFRAC_OFFSET);
-
-	/* Set CPU bypass */
-	writel(CLKCTRL_CLKSEQ_BYPASS_CPU,
-		&clkctrl_regs->hw_clkctrl_clkseq_set);
-
-	/* HBUS = 151MHz */
-	writel(CLKCTRL_HBUS_DIV_MASK, &clkctrl_regs->hw_clkctrl_hbus_set);
-	writel(((~3) << CLKCTRL_HBUS_DIV_OFFSET) & CLKCTRL_HBUS_DIV_MASK,
-		&clkctrl_regs->hw_clkctrl_hbus_clr);
-
-	early_delay(10000);
-
-	/* CPU clock divider = 1 */
-	clrsetbits_le32(&clkctrl_regs->hw_clkctrl_cpu,
-			CLKCTRL_CPU_DIV_CPU_MASK, 1);
-
-	/* Disable CPU bypass */
-	writel(CLKCTRL_CLKSEQ_BYPASS_CPU,
-		&clkctrl_regs->hw_clkctrl_clkseq_clr);
-}
-
-void mx28_mem_setup_vdda(void)
-{
-	struct mx28_power_regs *power_regs =
-		(struct mx28_power_regs *)MXS_POWER_BASE;
-
-	writel((0xc << POWER_VDDACTRL_TRG_OFFSET) |
-		(0x7 << POWER_VDDACTRL_BO_OFFSET_OFFSET) |
-		POWER_VDDACTRL_LINREG_OFFSET_1STEPS_BELOW,
-		&power_regs->hw_power_vddactrl);
-}
-
-void mx28_mem_setup_vddd(void)
-{
-	struct mx28_power_regs *power_regs =
-		(struct mx28_power_regs *)MXS_POWER_BASE;
-
-	writel((0x1c << POWER_VDDDCTRL_TRG_OFFSET) |
-		(0x7 << POWER_VDDDCTRL_BO_OFFSET_OFFSET) |
-		POWER_VDDDCTRL_LINREG_OFFSET_1STEPS_BELOW,
-		&power_regs->hw_power_vdddctrl);
-}
-
-#define	HW_DIGCTRL_SCRATCH0	0x8001c280
-#define	HW_DIGCTRL_SCRATCH1	0x8001c290
-void data_abort_memdetect_handler(void) __attribute__((naked));
-void data_abort_memdetect_handler(void)
-{
-	asm volatile("subs pc, r14, #4");
-}
-
-void mx28_mem_get_size(void)
-{
-	uint32_t sz, da;
-	uint32_t *vt = (uint32_t *)0x20;
-
-	/* Replace the DABT handler. */
-	da = vt[4];
-	vt[4] = (uint32_t)&data_abort_memdetect_handler;
-
-	sz = get_ram_size((long *)PHYS_SDRAM_1, PHYS_SDRAM_1_SIZE);
-	writel(sz, HW_DIGCTRL_SCRATCH0);
-	writel(sz, HW_DIGCTRL_SCRATCH1);
-
-	/* Restore the old DABT handler. */
-	vt[4] = da;
-}
-
-void mx28_mem_init(void)
-{
-	struct mx28_clkctrl_regs *clkctrl_regs =
-		(struct mx28_clkctrl_regs *)MXS_CLKCTRL_BASE;
-	struct mx28_pinctrl_regs *pinctrl_regs =
-		(struct mx28_pinctrl_regs *)MXS_PINCTRL_BASE;
-
-	/* Set DDR2 mode */
-	writel(PINCTRL_EMI_DS_CTRL_DDR_MODE_DDR2,
-		&pinctrl_regs->hw_pinctrl_emi_ds_ctrl_set);
-
-	/* Power up PLL0 */
-	writel(CLKCTRL_PLL0CTRL0_POWER,
-		&clkctrl_regs->hw_clkctrl_pll0ctrl0_set);
-
-	early_delay(11000);
-
-	mx28_mem_init_clock();
-
-	mx28_mem_setup_vdda();
-
-	/*
-	 * Configure the DRAM registers
-	 */
-
-	/* Clear START bit from DRAM_CTL16 */
-	clrbits_le32(MXS_DRAM_BASE + 0x40, 1);
-
-	init_m28_200mhz_ddr2();
-
-	/* Clear SREFRESH bit from DRAM_CTL17 */
-	clrbits_le32(MXS_DRAM_BASE + 0x44, 1);
-
-	/* Set START bit in DRAM_CTL16 */
-	setbits_le32(MXS_DRAM_BASE + 0x40, 1);
-
-	/* Wait for bit 20 (DRAM init complete) in DRAM_CTL58 */
-	while (!(readl(MXS_DRAM_BASE + 0xe8) & (1 << 20)))
-		;
-
-	mx28_mem_setup_vddd();
-
-	early_delay(10000);
-
-	mx28_mem_setup_cpu_and_hbus();
-
-	mx28_mem_get_size();
-}