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authorMarek Vasut <marek.vasut@gmail.com>2011-12-02 03:47:40 +0000
committerAlbert ARIBAUD <albert.u.boot@aribaud.net>2011-12-09 17:30:10 +0100
commitc944a3ef8224a2d5936b31ebd72a6ebd842409d1 (patch)
treecb1c87948ae461cdded93c479983e9c472937637 /board/denx/m28evk
parent74cf05fc53fc620c9d08eb14ad959c2a065f90c7 (diff)
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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>
Diffstat (limited to 'board/denx/m28evk')
-rw-r--r--board/denx/m28evk/Makefile11
-rw-r--r--board/denx/m28evk/m28_init.h41
-rw-r--r--board/denx/m28evk/mem_init.c240
-rw-r--r--board/denx/m28evk/power_init.c913
-rw-r--r--board/denx/m28evk/spl_boot.c (renamed from board/denx/m28evk/mmc_boot.c)61
-rw-r--r--board/denx/m28evk/start.S234
-rw-r--r--board/denx/m28evk/u-boot-spl.lds87
7 files changed, 6 insertions, 1581 deletions
diff --git a/board/denx/m28evk/Makefile b/board/denx/m28evk/Makefile
index b6f002f..aa16c7d 100644
--- a/board/denx/m28evk/Makefile
+++ b/board/denx/m28evk/Makefile
@@ -27,10 +27,8 @@ LIB = $(obj)lib$(BOARD).o
ifndef CONFIG_SPL_BUILD
COBJS := m28evk.o
-endif
-
-ifdef CONFIG_SPL_BUILD
-COBJS := mem_init.o mmc_boot.o power_init.o memsize.o
+else
+COBJS := spl_boot.o
endif
SRCS := $(COBJS:.o=.c)
@@ -41,11 +39,6 @@ $(LIB): $(obj).depend $(OBJS)
all: $(ALL)
-ifdef CONFIG_SPL_BUILD
-memsize.c:
- ln -sf $(TOPDIR)/common/memsize.c $@
-endif
-
#########################################################################
# defines $(obj).depend target
diff --git a/board/denx/m28evk/m28_init.h b/board/denx/m28evk/m28_init.h
deleted file mode 100644
index 98d3631..0000000
--- a/board/denx/m28evk/m28_init.h
+++ /dev/null
@@ -1,41 +0,0 @@
-/*
- * Freescale i.MX28 SPL functions
- *
- * 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
- */
-
-#ifndef __M28_INIT_H__
-#define __M28_INIT_H__
-
-void early_delay(int delay);
-
-void mx28_power_init(void);
-
-#ifdef CONFIG_SPL_MX28_PSWITCH_WAIT
-void mx28_power_wait_pswitch(void);
-#else
-static inline void mx28_power_wait_pswitch(void) { }
-#endif
-
-void mx28_mem_init(void);
-
-#endif /* __M28_INIT_H__ */
diff --git a/board/denx/m28evk/mem_init.c b/board/denx/m28evk/mem_init.c
deleted file mode 100644
index 17d1f9b..0000000
--- 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();
-}
diff --git a/board/denx/m28evk/power_init.c b/board/denx/m28evk/power_init.c
deleted file mode 100644
index 27322b4..0000000
--- a/board/denx/m28evk/power_init.c
+++ /dev/null
@@ -1,913 +0,0 @@
-/*
- * Freescale i.MX28 Boot PMIC 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/imx-regs.h>
-
-#include "m28_init.h"
-
-void mx28_power_clock2xtal(void)
-{
- struct mx28_clkctrl_regs *clkctrl_regs =
- (struct mx28_clkctrl_regs *)MXS_CLKCTRL_BASE;
-
- /* Set XTAL as CPU reference clock */
- writel(CLKCTRL_CLKSEQ_BYPASS_CPU,
- &clkctrl_regs->hw_clkctrl_clkseq_set);
-}
-
-void mx28_power_clock2pll(void)
-{
- struct mx28_clkctrl_regs *clkctrl_regs =
- (struct mx28_clkctrl_regs *)MXS_CLKCTRL_BASE;
-
- writel(CLKCTRL_PLL0CTRL0_POWER,
- &clkctrl_regs->hw_clkctrl_pll0ctrl0_set);
- early_delay(100);
- writel(CLKCTRL_CLKSEQ_BYPASS_CPU,
- &clkctrl_regs->hw_clkctrl_clkseq_clr);
-}
-
-void mx28_power_clear_auto_restart(void)
-{
- struct mx28_rtc_regs *rtc_regs =
- (struct mx28_rtc_regs *)MXS_RTC_BASE;
-
- writel(RTC_CTRL_SFTRST, &rtc_regs->hw_rtc_ctrl_clr);
- while (readl(&rtc_regs->hw_rtc_ctrl) & RTC_CTRL_SFTRST)
- ;
-
- writel(RTC_CTRL_CLKGATE, &rtc_regs->hw_rtc_ctrl_clr);
- while (readl(&rtc_regs->hw_rtc_ctrl) & RTC_CTRL_CLKGATE)
- ;
-
- /*
- * Due to the hardware design bug of mx28 EVK-A
- * we need to set the AUTO_RESTART bit.
- */
- if (readl(&rtc_regs->hw_rtc_persistent0) & RTC_PERSISTENT0_AUTO_RESTART)
- return;
-
- while (readl(&rtc_regs->hw_rtc_stat) & RTC_STAT_NEW_REGS_MASK)
- ;
-
- setbits_le32(&rtc_regs->hw_rtc_persistent0,
- RTC_PERSISTENT0_AUTO_RESTART);
- writel(RTC_CTRL_FORCE_UPDATE, &rtc_regs->hw_rtc_ctrl_set);
- writel(RTC_CTRL_FORCE_UPDATE, &rtc_regs->hw_rtc_ctrl_clr);
- while (readl(&rtc_regs->hw_rtc_stat) & RTC_STAT_NEW_REGS_MASK)
- ;
- while (readl(&rtc_regs->hw_rtc_stat) & RTC_STAT_STALE_REGS_MASK)
- ;
-}
-
-void mx28_power_set_linreg(void)
-{
- struct mx28_power_regs *power_regs =
- (struct mx28_power_regs *)MXS_POWER_BASE;
-
- /* Set linear regulator 25mV below switching converter */
- clrsetbits_le32(&power_regs->hw_power_vdddctrl,
- POWER_VDDDCTRL_LINREG_OFFSET_MASK,
- POWER_VDDDCTRL_LINREG_OFFSET_1STEPS_BELOW);
-
- clrsetbits_le32(&power_regs->hw_power_vddactrl,
- POWER_VDDACTRL_LINREG_OFFSET_MASK,
- POWER_VDDACTRL_LINREG_OFFSET_1STEPS_BELOW);
-
- clrsetbits_le32(&power_regs->hw_power_vddioctrl,
- POWER_VDDIOCTRL_LINREG_OFFSET_MASK,
- POWER_VDDIOCTRL_LINREG_OFFSET_1STEPS_BELOW);
-}
-
-void mx28_power_setup_5v_detect(void)
-{
- struct mx28_power_regs *power_regs =
- (struct mx28_power_regs *)MXS_POWER_BASE;
-
- /* Start 5V detection */
- clrsetbits_le32(&power_regs->hw_power_5vctrl,
- POWER_5VCTRL_VBUSVALID_TRSH_MASK,
- POWER_5VCTRL_VBUSVALID_TRSH_4V4 |
- POWER_5VCTRL_PWRUP_VBUS_CMPS);
-}
-
-void mx28_src_power_init(void)
-{
- struct mx28_power_regs *power_regs =
- (struct mx28_power_regs *)MXS_POWER_BASE;
-
- /* Improve efficieny and reduce transient ripple */
- writel(POWER_LOOPCTRL_TOGGLE_DIF | POWER_LOOPCTRL_EN_CM_HYST |
- POWER_LOOPCTRL_EN_DF_HYST, &power_regs->hw_power_loopctrl_set);
-
- clrsetbits_le32(&power_regs->hw_power_dclimits,
- POWER_DCLIMITS_POSLIMIT_BUCK_MASK,
- 0x30 << POWER_DCLIMITS_POSLIMIT_BUCK_OFFSET);
-
- setbits_le32(&power_regs->hw_power_battmonitor,
- POWER_BATTMONITOR_EN_BATADJ);
-
- /* Increase the RCSCALE level for quick DCDC response to dynamic load */
- clrsetbits_le32(&power_regs->hw_power_loopctrl,
- POWER_LOOPCTRL_EN_RCSCALE_MASK,
- POWER_LOOPCTRL_RCSCALE_THRESH |
- POWER_LOOPCTRL_EN_RCSCALE_8X);
-
- clrsetbits_le32(&power_regs->hw_power_minpwr,
- POWER_MINPWR_HALFFETS, POWER_MINPWR_DOUBLE_FETS);
-
- /* 5V to battery handoff ... FIXME */
- setbits_le32(&power_regs->hw_power_5vctrl, POWER_5VCTRL_DCDC_XFER);
- early_delay(30);
- clrbits_le32(&power_regs->hw_power_5vctrl, POWER_5VCTRL_DCDC_XFER);
-}
-
-void mx28_power_init_4p2_params(void)
-{
- struct mx28_power_regs *power_regs =
- (struct mx28_power_regs *)MXS_POWER_BASE;
-
- /* Setup 4P2 parameters */
- clrsetbits_le32(&power_regs->hw_power_dcdc4p2,
- POWER_DCDC4P2_CMPTRIP_MASK | POWER_DCDC4P2_TRG_MASK,
- POWER_DCDC4P2_TRG_4V2 | (31 << POWER_DCDC4P2_CMPTRIP_OFFSET));
-
- clrsetbits_le32(&power_regs->hw_power_5vctrl,
- POWER_5VCTRL_HEADROOM_ADJ_MASK,
- 0x4 << POWER_5VCTRL_HEADROOM_ADJ_OFFSET);
-
- clrsetbits_le32(&power_regs->hw_power_dcdc4p2,
- POWER_DCDC4P2_DROPOUT_CTRL_MASK,
- POWER_DCDC4P2_DROPOUT_CTRL_100MV |
- POWER_DCDC4P2_DROPOUT_CTRL_SRC_SEL);
-
- clrsetbits_le32(&power_regs->hw_power_5vctrl,
- POWER_5VCTRL_CHARGE_4P2_ILIMIT_MASK,
- 0x3f << POWER_5VCTRL_CHARGE_4P2_ILIMIT_OFFSET);
-}
-
-void mx28_enable_4p2_dcdc_input(int xfer)
-{
- struct mx28_power_regs *power_regs =
- (struct mx28_power_regs *)MXS_POWER_BASE;
- uint32_t tmp, vbus_thresh, vbus_5vdetect, pwd_bo;
- uint32_t prev_5v_brnout, prev_5v_droop;
-
- prev_5v_brnout = readl(&power_regs->hw_power_5vctrl) &
- POWER_5VCTRL_PWDN_5VBRNOUT;
- prev_5v_droop = readl(&power_regs->hw_power_ctrl) &
- POWER_CTRL_ENIRQ_VDD5V_DROOP;
-
- clrbits_le32(&power_regs->hw_power_5vctrl, POWER_5VCTRL_PWDN_5VBRNOUT);
- writel(POWER_RESET_UNLOCK_KEY | POWER_RESET_PWD_OFF,
- &power_regs->hw_power_reset);
-
- clrbits_le32(&power_regs->hw_power_ctrl, POWER_CTRL_ENIRQ_VDD5V_DROOP);
-
- if (xfer && (readl(&power_regs->hw_power_5vctrl) &
- POWER_5VCTRL_ENABLE_DCDC)) {
- return;
- }
-
- /*
- * Recording orignal values that will be modified temporarlily
- * to handle a chip bug. See chip errata for CQ ENGR00115837
- */
- tmp = readl(&power_regs->hw_power_5vctrl);
- vbus_thresh = tmp & POWER_5VCTRL_VBUSVALID_TRSH_MASK;
- vbus_5vdetect = tmp & POWER_5VCTRL_VBUSVALID_5VDETECT;
-
- pwd_bo = readl(&power_regs->hw_power_minpwr) & POWER_MINPWR_PWD_BO;
-
- /*
- * Disable mechanisms that get erroneously tripped by when setting
- * the DCDC4P2 EN_DCDC
- */
- clrbits_le32(&power_regs->hw_power_5vctrl,
- POWER_5VCTRL_VBUSVALID_5VDETECT |
- POWER_5VCTRL_VBUSVALID_TRSH_MASK);
-
- writel(POWER_MINPWR_PWD_BO, &power_regs->hw_power_minpwr_set);
-
- if (xfer) {
- setbits_le32(&power_regs->hw_power_5vctrl,
- POWER_5VCTRL_DCDC_XFER);
- early_delay(20);
- clrbits_le32(&power_regs->hw_power_5vctrl,
- POWER_5VCTRL_DCDC_XFER);
-
- setbits_le32(&power_regs->hw_power_5vctrl,
- POWER_5VCTRL_ENABLE_DCDC);
- } else {
- setbits_le32(&power_regs->hw_power_dcdc4p2,
- POWER_DCDC4P2_ENABLE_DCDC);
- }
-
- early_delay(25);
-
- clrsetbits_le32(&power_regs->hw_power_5vctrl,
- POWER_5VCTRL_VBUSVALID_TRSH_MASK, vbus_thresh);
-
- if (vbus_5vdetect)
- writel(vbus_5vdetect, &power_regs->hw_power_5vctrl_set);
-
- if (!pwd_bo)
- clrbits_le32(&power_regs->hw_power_minpwr, POWER_MINPWR_PWD_BO);
-
- while (readl(&power_regs->hw_power_ctrl) & POWER_CTRL_VBUS_VALID_IRQ)
- clrbits_le32(&power_regs->hw_power_ctrl,
- POWER_CTRL_VBUS_VALID_IRQ);
-
- if (prev_5v_brnout) {
- writel(POWER_5VCTRL_PWDN_5VBRNOUT,
- &power_regs->hw_power_5vctrl_set);
- writel(POWER_RESET_UNLOCK_KEY,
- &power_regs->hw_power_reset);
- } else {
- writel(POWER_5VCTRL_PWDN_5VBRNOUT,
- &power_regs->hw_power_5vctrl_clr);
- writel(POWER_RESET_UNLOCK_KEY | POWER_RESET_PWD_OFF,
- &power_regs->hw_power_reset);
- }
-
- while (readl(&power_regs->hw_power_ctrl) & POWER_CTRL_VDD5V_DROOP_IRQ)
- clrbits_le32(&power_regs->hw_power_ctrl,
- POWER_CTRL_VDD5V_DROOP_IRQ);
-
- if (prev_5v_droop)
- clrbits_le32(&power_regs->hw_power_ctrl,
- POWER_CTRL_ENIRQ_VDD5V_DROOP);
- else
- setbits_le32(&power_regs->hw_power_ctrl,
- POWER_CTRL_ENIRQ_VDD5V_DROOP);
-}
-
-void mx28_power_init_4p2_regulator(void)
-{
- struct mx28_power_regs *power_regs =
- (struct mx28_power_regs *)MXS_POWER_BASE;
- uint32_t tmp, tmp2;
-
- setbits_le32(&power_regs->hw_power_dcdc4p2, POWER_DCDC4P2_ENABLE_4P2);
-
- writel(POWER_CHARGE_ENABLE_LOAD, &power_regs->hw_power_charge_set);
-
- writel(POWER_5VCTRL_CHARGE_4P2_ILIMIT_MASK,
- &power_regs->hw_power_5vctrl_clr);
- clrbits_le32(&power_regs->hw_power_dcdc4p2, POWER_DCDC4P2_TRG_MASK);
-
- /* Power up the 4p2 rail and logic/control */
- writel(POWER_5VCTRL_PWD_CHARGE_4P2_MASK,
- &power_regs->hw_power_5vctrl_clr);
-
- /*
- * Start charging up the 4p2 capacitor. We ramp of this charge
- * gradually to avoid large inrush current from the 5V cable which can
- * cause transients/problems
- */
- mx28_enable_4p2_dcdc_input(0);
-
- if (readl(&power_regs->hw_power_ctrl) & POWER_CTRL_VBUS_VALID_IRQ) {
- /*
- * If we arrived here, we were unable to recover from mx23 chip
- * errata 5837. 4P2 is disabled and sufficient battery power is
- * not present. Exiting to not enable DCDC power during 5V
- * connected state.
- */
- clrbits_le32(&power_regs->hw_power_dcdc4p2,
- POWER_DCDC4P2_ENABLE_DCDC);
- writel(POWER_5VCTRL_PWD_CHARGE_4P2_MASK,
- &power_regs->hw_power_5vctrl_set);
- hang();
- }
-
- /*
- * Here we set the 4p2 brownout level to something very close to 4.2V.
- * We then check the brownout status. If the brownout status is false,
- * the voltage is already close to the target voltage of 4.2V so we
- * can go ahead and set the 4P2 current limit to our max target limit.
- * If the brownout status is true, we need to ramp us the current limit
- * so that we don't cause large inrush current issues. We step up the
- * current limit until the brownout status is false or until we've
- * reached our maximum defined 4p2 current limit.
- */
- clrsetbits_le32(&power_regs->hw_power_dcdc4p2,
- POWER_DCDC4P2_BO_MASK,
- 22 << POWER_DCDC4P2_BO_OFFSET); /* 4.15V */
-
- if (!(readl(&power_regs->hw_power_sts) & POWER_STS_DCDC_4P2_BO)) {
- setbits_le32(&power_regs->hw_power_5vctrl,
- 0x3f << POWER_5VCTRL_CHARGE_4P2_ILIMIT_OFFSET);
- } else {
- tmp = (readl(&power_regs->hw_power_5vctrl) &
- POWER_5VCTRL_CHARGE_4P2_ILIMIT_MASK) >>
- POWER_5VCTRL_CHARGE_4P2_ILIMIT_OFFSET;
- while (tmp < 0x3f) {
- if (!(readl(&power_regs->hw_power_sts) &
- POWER_STS_DCDC_4P2_BO)) {
- tmp = readl(&power_regs->hw_power_5vctrl);
- tmp |= POWER_5VCTRL_CHARGE_4P2_ILIMIT_MASK;
- early_delay(100);
- writel(tmp, &power_regs->hw_power_5vctrl);
- break;
- } else {
- tmp++;
- tmp2 = readl(&power_regs->hw_power_5vctrl);
- tmp2 &= ~POWER_5VCTRL_CHARGE_4P2_ILIMIT_MASK;
- tmp2 |= tmp <<
- POWER_5VCTRL_CHARGE_4P2_ILIMIT_OFFSET;
- writel(tmp2, &power_regs->hw_power_5vctrl);
- early_delay(100);
- }
- }
- }
-
- clrbits_le32(&power_regs->hw_power_dcdc4p2, POWER_DCDC4P2_BO_MASK);
- writel(POWER_CTRL_DCDC4P2_BO_IRQ, &power_regs->hw_power_ctrl_clr);
-}
-
-void mx28_power_init_dcdc_4p2_source(void)
-{
- struct mx28_power_regs *power_regs =
- (struct mx28_power_regs *)MXS_POWER_BASE;
-
- if (!(readl(&power_regs->hw_power_dcdc4p2) &
- POWER_DCDC4P2_ENABLE_DCDC)) {
- hang();
- }
-
- mx28_enable_4p2_dcdc_input(1);
-
- if (readl(&power_regs->hw_power_ctrl) & POWER_CTRL_VBUS_VALID_IRQ) {
- clrbits_le32(&power_regs->hw_power_dcdc4p2,
- POWER_DCDC4P2_ENABLE_DCDC);
- writel(POWER_5VCTRL_ENABLE_DCDC,
- &power_regs->hw_power_5vctrl_clr);
- writel(POWER_5VCTRL_PWD_CHARGE_4P2_MASK,
- &power_regs->hw_power_5vctrl_set);
- }
-}
-
-void mx28_power_enable_4p2(void)
-{
- struct mx28_power_regs *power_regs =
- (struct mx28_power_regs *)MXS_POWER_BASE;
- uint32_t vdddctrl, vddactrl, vddioctrl;
- uint32_t tmp;
-
- vdddctrl = readl(&power_regs->hw_power_vdddctrl);
- vddactrl = readl(&power_regs->hw_power_vddactrl);
- vddioctrl = readl(&power_regs->hw_power_vddioctrl);
-
- setbits_le32(&power_regs->hw_power_vdddctrl,
- POWER_VDDDCTRL_DISABLE_FET | POWER_VDDDCTRL_ENABLE_LINREG |
- POWER_VDDDCTRL_PWDN_BRNOUT);
-
- setbits_le32(&power_regs->hw_power_vddactrl,
- POWER_VDDACTRL_DISABLE_FET | POWER_VDDACTRL_ENABLE_LINREG |
- POWER_VDDACTRL_PWDN_BRNOUT);
-
- setbits_le32(&power_regs->hw_power_vddioctrl,
- POWER_VDDIOCTRL_DISABLE_FET | POWER_VDDIOCTRL_PWDN_BRNOUT);
-
- mx28_power_init_4p2_params();
- mx28_power_init_4p2_regulator();
-
- /* Shutdown battery (none present) */
- clrbits_le32(&power_regs->hw_power_dcdc4p2, POWER_DCDC4P2_BO_MASK);
- writel(POWER_CTRL_DCDC4P2_BO_IRQ, &power_regs->hw_power_ctrl_clr);
- writel(POWER_CTRL_ENIRQ_DCDC4P2_BO, &power_regs->hw_power_ctrl_clr);
-
- mx28_power_init_dcdc_4p2_source();
-
- writel(vdddctrl, &power_regs->hw_power_vdddctrl);
- early_delay(20);
- writel(vddactrl, &power_regs->hw_power_vddactrl);
- early_delay(20);
- writel(vddioctrl, &power_regs->hw_power_vddioctrl);
-
- /*
- * Check if FET is enabled on either powerout and if so,
- * disable load.
- */
- tmp = 0;
- tmp |= !(readl(&power_regs->hw_power_vdddctrl) &
- POWER_VDDDCTRL_DISABLE_FET);
- tmp |= !(readl(&power_regs->hw_power_vddactrl) &
- POWER_VDDACTRL_DISABLE_FET);
- tmp |= !(readl(&power_regs->hw_power_vddioctrl) &
- POWER_VDDIOCTRL_DISABLE_FET);
- if (tmp)
- writel(POWER_CHARGE_ENABLE_LOAD,
- &power_regs->hw_power_charge_clr);
-}
-
-void mx28_boot_valid_5v(void)
-{
- struct mx28_power_regs *power_regs =
- (struct mx28_power_regs *)MXS_POWER_BASE;
-
- /*
- * Use VBUSVALID level instead of VDD5V_GT_VDDIO level to trigger a 5V
- * disconnect event. FIXME
- */
- writel(POWER_5VCTRL_VBUSVALID_5VDETECT,
- &power_regs->hw_power_5vctrl_set);
-
- /* Configure polarity to check for 5V disconnection. */
- writel(POWER_CTRL_POLARITY_VBUSVALID |
- POWER_CTRL_POLARITY_VDD5V_GT_VDDIO,
- &power_regs->hw_power_ctrl_clr);
-
- writel(POWER_CTRL_VBUS_VALID_IRQ | POWER_CTRL_VDD5V_GT_VDDIO_IRQ,
- &power_regs->hw_power_ctrl_clr);
-
- mx28_power_enable_4p2();
-}
-
-void mx28_powerdown(void)
-{
- struct mx28_power_regs *power_regs =
- (struct mx28_power_regs *)MXS_POWER_BASE;
- writel(POWER_RESET_UNLOCK_KEY, &power_regs->hw_power_reset);
- writel(POWER_RESET_UNLOCK_KEY | POWER_RESET_PWD_OFF,
- &power_regs->hw_power_reset);
-}
-
-void mx28_handle_5v_conflict(void)
-{
- struct mx28_power_regs *power_regs =
- (struct mx28_power_regs *)MXS_POWER_BASE;
- uint32_t tmp;
-
- setbits_le32(&power_regs->hw_power_vddioctrl,
- POWER_VDDIOCTRL_BO_OFFSET_MASK);
-
- for (;;) {
- tmp = readl(&power_regs->hw_power_sts);
-
- if (tmp & POWER_STS_VDDIO_BO) {
- mx28_powerdown();
- break;
- }
-
- if (tmp & POWER_STS_VDD5V_GT_VDDIO) {
- mx28_boot_valid_5v();
- break;
- } else {
- mx28_powerdown();
- break;
- }
- }
-}
-
-int mx28_get_batt_volt(void)
-{
- struct mx28_power_regs *power_regs =
- (struct mx28_power_regs *)MXS_POWER_BASE;
- uint32_t volt = readl(&power_regs->hw_power_battmonitor);
- volt &= POWER_BATTMONITOR_BATT_VAL_MASK;
- volt >>= POWER_BATTMONITOR_BATT_VAL_OFFSET;
- volt *= 8;
- return volt;
-}
-
-int mx28_is_batt_ready(void)
-{
- return (mx28_get_batt_volt() >= 3600);
-}
-
-void mx28_5v_boot(void)
-{
- struct mx28_power_regs *power_regs =
- (struct mx28_power_regs *)MXS_POWER_BASE;
-
- /*
- * NOTE: In original IMX-Bootlets, this also checks for VBUSVALID,
- * but their implementation always returns 1 so we omit it here.
- */
- if (readl(&power_regs->hw_power_sts) & POWER_STS_VDD5V_GT_VDDIO) {
- mx28_boot_valid_5v();
- return;
- }
-
- early_delay(1000);
- if (readl(&power_regs->hw_power_sts) & POWER_STS_VDD5V_GT_VDDIO) {
- mx28_boot_valid_5v();
- return;
- }
-
- mx28_handle_5v_conflict();
-}
-
-void mx28_init_batt_bo(void)
-{
- struct mx28_power_regs *power_regs =
- (struct mx28_power_regs *)MXS_POWER_BASE;
-
- /* Brownout at 3V */
- clrsetbits_le32(&power_regs->hw_power_battmonitor,
- POWER_BATTMONITOR_BRWNOUT_LVL_MASK,
- 15 << POWER_BATTMONITOR_BRWNOUT_LVL_OFFSET);
-
- writel(POWER_CTRL_BATT_BO_IRQ, &power_regs->hw_power_ctrl_clr);
- writel(POWER_CTRL_ENIRQ_BATT_BO, &power_regs->hw_power_ctrl_clr);
-}
-
-void mx28_switch_vddd_to_dcdc_source(void)
-{
- struct mx28_power_regs *power_regs =
- (struct mx28_power_regs *)MXS_POWER_BASE;
-
- clrsetbits_le32(&power_regs->hw_power_vdddctrl,
- POWER_VDDDCTRL_LINREG_OFFSET_MASK,
- POWER_VDDDCTRL_LINREG_OFFSET_1STEPS_BELOW);
-
- clrbits_le32(&power_regs->hw_power_vdddctrl,
- POWER_VDDDCTRL_DISABLE_FET | POWER_VDDDCTRL_ENABLE_LINREG |
- POWER_VDDDCTRL_DISABLE_STEPPING);
-}
-
-int mx28_is_batt_good(void)
-{
- struct mx28_power_regs *power_regs =
- (struct mx28_power_regs *)MXS_POWER_BASE;
- uint32_t volt;
-
- volt = readl(&power_regs->hw_power_battmonitor);
- volt &= POWER_BATTMONITOR_BATT_VAL_MASK;
- volt >>= POWER_BATTMONITOR_BATT_VAL_OFFSET;
- volt *= 8;
-
- if ((volt >= 2400) && (volt <= 4300))
- return 1;
-
- clrsetbits_le32(&power_regs->hw_power_5vctrl,
- POWER_5VCTRL_CHARGE_4P2_ILIMIT_MASK,
- 0x3 << POWER_5VCTRL_CHARGE_4P2_ILIMIT_OFFSET);
- writel(POWER_5VCTRL_PWD_CHARGE_4P2_MASK,
- &power_regs->hw_power_5vctrl_clr);
-
- clrsetbits_le32(&power_regs->hw_power_charge,
- POWER_CHARGE_STOP_ILIMIT_MASK | POWER_CHARGE_BATTCHRG_I_MASK,
- POWER_CHARGE_STOP_ILIMIT_10MA | 0x3);
-
- writel(POWER_CHARGE_PWD_BATTCHRG, &power_regs->hw_power_charge_clr);
- writel(POWER_5VCTRL_PWD_CHARGE_4P2_MASK,
- &power_regs->hw_power_5vctrl_clr);
-
- early_delay(500000);
-
- volt = readl(&power_regs->hw_power_battmonitor);
- volt &= POWER_BATTMONITOR_BATT_VAL_MASK;
- volt >>= POWER_BATTMONITOR_BATT_VAL_OFFSET;
- volt *= 8;
-
- if (volt >= 3500)
- return 0;
-
- if (volt >= 2400)
- return 1;
-
- writel(POWER_CHARGE_STOP_ILIMIT_MASK | POWER_CHARGE_BATTCHRG_I_MASK,
- &power_regs->hw_power_charge_clr);
- writel(POWER_CHARGE_PWD_BATTCHRG, &power_regs->hw_power_charge_set);
-
- return 0;
-}
-
-void mx28_power_configure_power_source(void)
-{
- mx28_src_power_init();
-
- mx28_5v_boot();
- mx28_power_clock2pll();
-
- mx28_init_batt_bo();
- mx28_switch_vddd_to_dcdc_source();
-}
-
-void mx28_enable_output_rail_protection(void)
-{
- struct mx28_power_regs *power_regs =
- (struct mx28_power_regs *)MXS_POWER_BASE;
-
- writel(POWER_CTRL_VDDD_BO_IRQ | POWER_CTRL_VDDA_BO_IRQ |
- POWER_CTRL_VDDIO_BO_IRQ, &power_regs->hw_power_ctrl_clr);
-
- setbits_le32(&power_regs->hw_power_vdddctrl,
- POWER_VDDDCTRL_PWDN_BRNOUT);
-
- setbits_le32(&power_regs->hw_power_vddactrl,
- POWER_VDDACTRL_PWDN_BRNOUT);
-
- setbits_le32(&power_regs->hw_power_vddioctrl,
- POWER_VDDIOCTRL_PWDN_BRNOUT);
-}
-
-int mx28_get_vddio_power_source_off(void)
-{
- struct mx28_power_regs *power_regs =
- (struct mx28_power_regs *)MXS_POWER_BASE;
- uint32_t tmp;
-
- if (readl(&power_regs->hw_power_sts) & POWER_STS_VDD5V_GT_VDDIO) {
- tmp = readl(&power_regs->hw_power_vddioctrl);
- if (tmp & POWER_VDDIOCTRL_DISABLE_FET) {
- if ((tmp & POWER_VDDIOCTRL_LINREG_OFFSET_MASK) ==
- POWER_VDDDCTRL_LINREG_OFFSET_0STEPS) {
- return 1;
- }
- }
-
- if (!(readl(&power_regs->hw_power_5vctrl) &
- POWER_5VCTRL_ENABLE_DCDC)) {
- if ((tmp & POWER_VDDIOCTRL_LINREG_OFFSET_MASK) ==
- POWER_VDDDCTRL_LINREG_OFFSET_0STEPS) {
- return 1;
- }
- }
- }
-
- return 0;
-
-}
-
-int mx28_get_vddd_power_source_off(void)
-{
- struct mx28_power_regs *power_regs =
- (struct mx28_power_regs *)MXS_POWER_BASE;
- uint32_t tmp;
-
- tmp = readl(&power_regs->hw_power_vdddctrl);
- if (tmp & POWER_VDDDCTRL_DISABLE_FET) {
- if ((tmp & POWER_VDDDCTRL_LINREG_OFFSET_MASK) ==
- POWER_VDDDCTRL_LINREG_OFFSET_0STEPS) {
- return 1;
- }
- }
-
- if (readl(&power_regs->hw_power_sts) & POWER_STS_VDD5V_GT_VDDIO) {
- if (!(readl(&power_regs->hw_power_5vctrl) &
- POWER_5VCTRL_ENABLE_DCDC)) {
- return 1;
- }
- }
-
- if (!(tmp & POWER_VDDDCTRL_ENABLE_LINREG)) {
- if ((tmp & POWER_VDDDCTRL_LINREG_OFFSET_MASK) ==
- POWER_VDDDCTRL_LINREG_OFFSET_1STEPS_BELOW) {
- return 1;
- }
- }
-
- return 0;
-}
-
-void mx28_power_set_vddio(uint32_t new_target, uint32_t new_brownout)
-{
- struct mx28_power_regs *power_regs =
- (struct mx28_power_regs *)MXS_POWER_BASE;
- uint32_t cur_target, diff, bo_int = 0;
- uint32_t powered_by_linreg = 0;
-
- new_brownout = new_target - new_brownout;
-
- cur_target = readl(&power_regs->hw_power_vddioctrl);
- cur_target &= POWER_VDDIOCTRL_TRG_MASK;
- cur_target *= 50; /* 50 mV step*/
- cur_target += 2800; /* 2800 mV lowest */
-
- powered_by_linreg = mx28_get_vddio_power_source_off();
- if (new_target > cur_target) {
-
- if (powered_by_linreg) {
- bo_int = readl(&power_regs->hw_power_vddioctrl);
- clrbits_le32(&power_regs->hw_power_vddioctrl,
- POWER_CTRL_ENIRQ_VDDIO_BO);
- }
-
- setbits_le32(&power_regs->hw_power_vddioctrl,
- POWER_VDDIOCTRL_BO_OFFSET_MASK);
- do {
- if (new_target - cur_target > 100)
- diff = cur_target + 100;
- else
- diff = new_target;
-
- diff -= 2800;
- diff /= 50;
-
- clrsetbits_le32(&power_regs->hw_power_vddioctrl,
- POWER_VDDIOCTRL_TRG_MASK, diff);
-
- if (powered_by_linreg)
- early_delay(1500);
- else {
- while (!(readl(&power_regs->hw_power_sts) &
- POWER_STS_DC_OK))
- ;
-
- }
-
- cur_target = readl(&power_regs->hw_power_vddioctrl);
- cur_target &= POWER_VDDIOCTRL_TRG_MASK;
- cur_target *= 50; /* 50 mV step*/
- cur_target += 2800; /* 2800 mV lowest */
- } while (new_target > cur_target);
-
- if (powered_by_linreg) {
- writel(POWER_CTRL_VDDIO_BO_IRQ,
- &power_regs->hw_power_ctrl_clr);
- if (bo_int & POWER_CTRL_ENIRQ_VDDIO_BO)
- setbits_le32(&power_regs->hw_power_vddioctrl,
- POWER_CTRL_ENIRQ_VDDIO_BO);
- }
- } else {
- do {
- if (cur_target - new_target > 100)
- diff = cur_target - 100;
- else
- diff = new_target;
-
- diff -= 2800;
- diff /= 50;
-
- clrsetbits_le32(&power_regs->hw_power_vddioctrl,
- POWER_VDDIOCTRL_TRG_MASK, diff);
-
- if (powered_by_linreg)
- early_delay(1500);
- else {
- while (!(readl(&power_regs->hw_power_sts) &
- POWER_STS_DC_OK))
- ;
-
- }
-
- cur_target = readl(&power_regs->hw_power_vddioctrl);
- cur_target &= POWER_VDDIOCTRL_TRG_MASK;
- cur_target *= 50; /* 50 mV step*/
- cur_target += 2800; /* 2800 mV lowest */
- } while (new_target < cur_target);
- }
-
- clrsetbits_le32(&power_regs->hw_power_vddioctrl,
- POWER_VDDDCTRL_BO_OFFSET_MASK,
- new_brownout << POWER_VDDDCTRL_BO_OFFSET_OFFSET);
-}
-
-void mx28_power_set_vddd(uint32_t new_target, uint32_t new_brownout)
-{
- struct mx28_power_regs *power_regs =
- (struct mx28_power_regs *)MXS_POWER_BASE;
- uint32_t cur_target, diff, bo_int = 0;
- uint32_t powered_by_linreg = 0;
-
- new_brownout = new_target - new_brownout;
-
- cur_target = readl(&power_regs->hw_power_vdddctrl);
- cur_target &= POWER_VDDDCTRL_TRG_MASK;
- cur_target *= 25; /* 25 mV step*/
- cur_target += 800; /* 800 mV lowest */
-
- powered_by_linreg = mx28_get_vddd_power_source_off();
- if (new_target > cur_target) {
- if (powered_by_linreg) {
- bo_int = readl(&power_regs->hw_power_vdddctrl);
- clrbits_le32(&power_regs->hw_power_vdddctrl,
- POWER_CTRL_ENIRQ_VDDD_BO);
- }
-
- setbits_le32(&power_regs->hw_power_vdddctrl,
- POWER_VDDDCTRL_BO_OFFSET_MASK);
-
- do {
- if (new_target - cur_target > 100)
- diff = cur_target + 100;
- else
- diff = new_target;
-
- diff -= 800;
- diff /= 25;
-
- clrsetbits_le32(&power_regs->hw_power_vdddctrl,
- POWER_VDDDCTRL_TRG_MASK, diff);
-
- if (powered_by_linreg)
- early_delay(1500);
- else {
- while (!(readl(&power_regs->hw_power_sts) &
- POWER_STS_DC_OK))
- ;
-
- }
-
- cur_target = readl(&power_regs->hw_power_vdddctrl);
- cur_target &= POWER_VDDDCTRL_TRG_MASK;
- cur_target *= 25; /* 25 mV step*/
- cur_target += 800; /* 800 mV lowest */
- } while (new_target > cur_target);
-
- if (powered_by_linreg) {
- writel(POWER_CTRL_VDDD_BO_IRQ,
- &power_regs->hw_power_ctrl_clr);
- if (bo_int & POWER_CTRL_ENIRQ_VDDD_BO)
- setbits_le32(&power_regs->hw_power_vdddctrl,
- POWER_CTRL_ENIRQ_VDDD_BO);
- }
- } else {
- do {
- if (cur_target - new_target > 100)
- diff = cur_target - 100;
- else
- diff = new_target;
-
- diff -= 800;
- diff /= 25;
-
- clrsetbits_le32(&power_regs->hw_power_vdddctrl,
- POWER_VDDDCTRL_TRG_MASK, diff);
-
- if (powered_by_linreg)
- early_delay(1500);
- else {
- while (!(readl(&power_regs->hw_power_sts) &
- POWER_STS_DC_OK))
- ;
-
- }
-
- cur_target = readl(&power_regs->hw_power_vdddctrl);
- cur_target &= POWER_VDDDCTRL_TRG_MASK;
- cur_target *= 25; /* 25 mV step*/
- cur_target += 800; /* 800 mV lowest */
- } while (new_target < cur_target);
- }
-
- clrsetbits_le32(&power_regs->hw_power_vdddctrl,
- POWER_VDDDCTRL_BO_OFFSET_MASK,
- new_brownout << POWER_VDDDCTRL_BO_OFFSET_OFFSET);
-}
-
-void mx28_power_init(void)
-{
- struct mx28_power_regs *power_regs =
- (struct mx28_power_regs *)MXS_POWER_BASE;
-
- mx28_power_clock2xtal();
- mx28_power_clear_auto_restart();
- mx28_power_set_linreg();
- mx28_power_setup_5v_detect();
- mx28_power_configure_power_source();
- mx28_enable_output_rail_protection();
-
- mx28_power_set_vddio(3300, 3150);
-
- mx28_power_set_vddd(1350, 1200);
-
- writel(POWER_CTRL_VDDD_BO_IRQ | POWER_CTRL_VDDA_BO_IRQ |
- POWER_CTRL_VDDIO_BO_IRQ | POWER_CTRL_VDD5V_DROOP_IRQ |
- POWER_CTRL_VBUS_VALID_IRQ | POWER_CTRL_BATT_BO_IRQ |
- POWER_CTRL_DCDC4P2_BO_IRQ, &power_regs->hw_power_ctrl_clr);
-
- writel(POWER_5VCTRL_PWDN_5VBRNOUT, &power_regs->hw_power_5vctrl_set);
-
- early_delay(1000);
-}
-
-#ifdef CONFIG_SPL_MX28_PSWITCH_WAIT
-void mx28_power_wait_pswitch(void)
-{
- struct mx28_power_regs *power_regs =
- (struct mx28_power_regs *)MXS_POWER_BASE;
-
- while (!(readl(&power_regs->hw_power_sts) & POWER_STS_PSWITCH_MASK))
- ;
-}
-#endif
diff --git a/board/denx/m28evk/mmc_boot.c b/board/denx/m28evk/spl_boot.c
index 86d3ab5..86d7d87 100644
--- a/board/denx/m28evk/mmc_boot.c
+++ b/board/denx/m28evk/spl_boot.c
@@ -1,5 +1,5 @@
/*
- * Freescale i.MX28 Boot setup
+ * DENX M28 Boot setup
*
* Copyright (C) 2011 Marek Vasut <marek.vasut@gmail.com>
* on behalf of DENX Software Engineering GmbH
@@ -27,23 +27,8 @@
#include <config.h>
#include <asm/io.h>
#include <asm/arch/iomux-mx28.h>
-
-#include "m28_init.h"
-
-/*
- * This delay function is intended to be used only in early stage of boot, where
- * clock are not set up yet. The timer used here is reset on every boot and
- * takes a few seconds to roll. The boot doesn't take that long, so to keep the
- * code simple, it doesn't take rolling into consideration.
- */
-#define HW_DIGCTRL_MICROSECONDS 0x8001c0c0
-void early_delay(int delay)
-{
- uint32_t st = readl(HW_DIGCTRL_MICROSECONDS);
- st += delay;
- while (st > readl(HW_DIGCTRL_MICROSECONDS))
- ;
-}
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/sys_proto.h>
#define MUX_CONFIG_LED (MXS_PAD_3V3 | MXS_PAD_4MA | MXS_PAD_NOPULL)
#define MUX_CONFIG_LCD (MXS_PAD_3V3 | MXS_PAD_4MA)
@@ -109,10 +94,6 @@ const iomux_cfg_t iomux_setup[] = {
MX28_PAD_GPMI_RDY2__CAN0_TX,
MX28_PAD_GPMI_RDY3__CAN0_RX,
- /* I2C */
- MX28_PAD_I2C0_SCL__I2C0_SCL,
- MX28_PAD_I2C0_SDA__I2C0_SDA,
-
/* TSC2007 */
MX28_PAD_SAIF0_MCLK__GPIO_3_20 | MUX_CONFIG_TSC,
@@ -235,39 +216,5 @@ const iomux_cfg_t iomux_setup[] = {
void board_init_ll(void)
{
- mxs_iomux_setup_multiple_pads(iomux_setup, ARRAY_SIZE(iomux_setup));
- mx28_power_init();
- mx28_mem_init();
- mx28_power_wait_pswitch();
-}
-
-/* Support aparatus */
-inline void board_init_f(unsigned long bootflag)
-{
- for (;;)
- ;
-}
-
-inline void board_init_r(gd_t *id, ulong dest_addr)
-{
- for (;;)
- ;
-}
-
-inline int printf(const char *fmt, ...)
-{
- return 0;
-}
-
-inline void __coloured_LED_init(void) {}
-inline void __red_LED_on(void) {}
-void coloured_LED_init(void)
- __attribute__((weak, alias("__coloured_LED_init")));
-void red_LED_on(void)
- __attribute__((weak, alias("__red_LED_on")));
-void hang(void) __attribute__ ((noreturn));
-void hang(void)
-{
- for (;;)
- ;
+ mx28_common_spl_init(iomux_setup, ARRAY_SIZE(iomux_setup));
}
diff --git a/board/denx/m28evk/start.S b/board/denx/m28evk/start.S
deleted file mode 100644
index 94696d6..0000000
--- a/board/denx/m28evk/start.S
+++ /dev/null
@@ -1,234 +0,0 @@
-/*
- * armboot - Startup Code for ARM926EJS CPU-core
- *
- * Copyright (c) 2003 Texas Instruments
- *
- * ----- Adapted for OMAP1610 OMAP730 from ARM925t code ------
- *
- * Copyright (c) 2001 Marius Groger <mag@sysgo.de>
- * Copyright (c) 2002 Alex Zupke <azu@sysgo.de>
- * Copyright (c) 2002 Gary Jennejohn <garyj@denx.de>
- * Copyright (c) 2003 Richard Woodruff <r-woodruff2@ti.com>
- * Copyright (c) 2003 Kshitij <kshitij@ti.com>
- * Copyright (c) 2010 Albert Aribaud <albert.u.boot@aribaud.net>
- *
- * Change to support call back into iMX28 bootrom
- * 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 <asm-offsets.h>
-#include <config.h>
-#include <common.h>
-#include <version.h>
-
-#if defined(CONFIG_OMAP1610)
-#include <./configs/omap1510.h>
-#elif defined(CONFIG_OMAP730)
-#include <./configs/omap730.h>
-#endif
-
-/*
- *************************************************************************
- *
- * Jump vector table as in table 3.1 in [1]
- *
- *************************************************************************
- */
-
-
-.globl _start
-_start:
- b reset
- b undefined_instruction
- b software_interrupt
- b prefetch_abort
- b data_abort
- b not_used
- b irq
- b fiq
-
-/*
- * Vector table, located at address 0x20.
- * This table allows the code running AFTER SPL, the U-Boot, to install it's
- * interrupt handlers here. The problem is that the U-Boot is loaded into RAM,
- * including it's interrupt vectoring table and the table at 0x0 is still the
- * SPLs. So if interrupt happens in U-Boot, the SPLs interrupt vectoring table
- * is still used.
- */
-_vt_reset:
- .word _reset
-_vt_undefined_instruction:
- .word _hang
-_vt_software_interrupt:
- .word _hang
-_vt_prefetch_abort:
- .word _hang
-_vt_data_abort:
- .word _hang
-_vt_not_used:
- .word _reset
-_vt_irq:
- .word _hang
-_vt_fiq:
- .word _hang
-
-reset:
- ldr pc, _vt_reset
-undefined_instruction:
- ldr pc, _vt_undefined_instruction
-software_interrupt:
- ldr pc, _vt_software_interrupt
-prefetch_abort:
- ldr pc, _vt_prefetch_abort
-data_abort:
- ldr pc, _vt_data_abort
-not_used:
- ldr pc, _vt_not_used
-irq:
- ldr pc, _vt_irq
-fiq:
- ldr pc, _vt_fiq
-
- .balignl 16,0xdeadbeef
-
-/*
- *************************************************************************
- *
- * Startup Code (reset vector)
- *
- * do important init only if we don't start from memory!
- * setup Memory and board specific bits prior to relocation.
- * relocate armboot to ram
- * setup stack
- *
- *************************************************************************
- */
-
-.globl _TEXT_BASE
-_TEXT_BASE:
- .word CONFIG_SYS_TEXT_BASE
-
-/*
- * These are defined in the board-specific linker script.
- * Subtracting _start from them lets the linker put their
- * relative position in the executable instead of leaving
- * them null.
- */
-.globl _bss_start_ofs
-_bss_start_ofs:
- .word __bss_start - _start
-
-.globl _bss_end_ofs
-_bss_end_ofs:
- .word __bss_end__ - _start
-
-.globl _end_ofs
-_end_ofs:
- .word _end - _start
-
-#ifdef CONFIG_USE_IRQ
-/* IRQ stack memory (calculated at run-time) */
-.globl IRQ_STACK_START
-IRQ_STACK_START:
- .word 0x0badc0de
-
-/* IRQ stack memory (calculated at run-time) */
-.globl FIQ_STACK_START
-FIQ_STACK_START:
- .word 0x0badc0de
-#endif
-
-/* IRQ stack memory (calculated at run-time) + 8 bytes */
-.globl IRQ_STACK_START_IN
-IRQ_STACK_START_IN:
- .word 0x0badc0de
-
-/*
- * the actual reset code
- */
-
-_reset:
- /*
- * Store all registers on old stack pointer, this will allow us later to
- * return to the BootROM and let the BootROM load U-Boot into RAM.
- */
- push {r0-r12,r14}
-
- /*
- * set the cpu to SVC32 mode
- */
- mrs r0,cpsr
- bic r0,r0,#0x1f
- orr r0,r0,#0xd3
- msr cpsr,r0
-
- /*
- * we do sys-critical inits only at reboot,
- * not when booting from ram!
- */
-#ifndef CONFIG_SKIP_LOWLEVEL_INIT
- bl cpu_init_crit
-#endif
-
- bl board_init_ll
-
- pop {r0-r12,r14}
- bx lr
-
-/*
- *************************************************************************
- *
- * CPU_init_critical registers
- *
- * setup important registers
- * setup memory timing
- *
- *************************************************************************
- */
-#ifndef CONFIG_SKIP_LOWLEVEL_INIT
-cpu_init_crit:
- /*
- * flush v4 I/D caches
- */
- mov r0, #0
- mcr p15, 0, r0, c7, c7, 0 /* flush v3/v4 cache */
- mcr p15, 0, r0, c8, c7, 0 /* flush v4 TLB */
-
- /*
- * disable MMU stuff and caches
- */
- mrc p15, 0, r0, c1, c0, 0
- bic r0, r0, #0x00002300 /* clear bits 13, 9:8 (--V- --RS) */
- bic r0, r0, #0x00000087 /* clear bits 7, 2:0 (B--- -CAM) */
- orr r0, r0, #0x00000002 /* set bit 2 (A) Align */
- orr r0, r0, #0x00001000 /* set bit 12 (I) I-Cache */
- mcr p15, 0, r0, c1, c0, 0
-
- mov pc, lr /* back to my caller */
-
- .align 5
-#endif /* CONFIG_SKIP_LOWLEVEL_INIT */
-
-_hang:
- ldr sp, _TEXT_BASE /* switch to abort stack */
-1:
- bl 1b /* hang and never return */
diff --git a/board/denx/m28evk/u-boot-spl.lds b/board/denx/m28evk/u-boot-spl.lds
deleted file mode 100644
index e296a92..0000000
--- a/board/denx/m28evk/u-boot-spl.lds
+++ /dev/null
@@ -1,87 +0,0 @@
-/*
- * Copyright (C) 2011 Marek Vasut <marek.vasut@gmail.com>
- * on behalf of DENX Software Engineering GmbH
- *
- * January 2004 - Changed to support H4 device
- * Copyright (c) 2004-2008 Texas Instruments
- *
- * (C) Copyright 2002
- * Gary Jennejohn, DENX Software Engineering, <garyj@denx.de>
- *
- * 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
- */
-
-OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
-OUTPUT_ARCH(arm)
-ENTRY(_start)
-SECTIONS
-{
- . = 0x00000000;
-
- . = ALIGN(4);
- .text :
- {
- board/denx/m28evk/start.o (.text)
- *(.text)
- }
-
- . = ALIGN(4);
- .rodata : { *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) }
-
- . = ALIGN(4);
- .data : {
- *(.data)
- }
-
- . = ALIGN(4);
- __u_boot_cmd_start = .;
- .u_boot_cmd : { *(.u_boot_cmd) }
- __u_boot_cmd_end = .;
-
- . = ALIGN(4);
-
- .rel.dyn : {
- __rel_dyn_start = .;
- *(.rel*)
- __rel_dyn_end = .;
- }
-
- .dynsym : {
- __dynsym_start = .;
- *(.dynsym)
- }
-
- _end = .;
-
- .bss __rel_dyn_start (OVERLAY) : {
- __bss_start = .;
- *(.bss)
- . = ALIGN(4);
- __bss_end__ = .;
- }
-
- /DISCARD/ : { *(.bss*) }
- /DISCARD/ : { *(.dynstr*) }
- /DISCARD/ : { *(.dynsym*) }
- /DISCARD/ : { *(.dynamic*) }
- /DISCARD/ : { *(.hash*) }
- /DISCARD/ : { *(.plt*) }
- /DISCARD/ : { *(.interp*) }
- /DISCARD/ : { *(.gnu*) }
-}