mirror of
https://github.com/AsahiLinux/u-boot
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7b8657e2bd
Make sure value in register r0 and r1 is preserved and passed to the board_init_ll() and mxs_common_spl_init() where it can be processed further. The value in r0 can be configured during the BootStream generation to arbitary value, r1 contains pointer to return value from CALL'd function. This patch also clears the value in r0 before returning to BootROM to make sure the BootROM is not confused by this value. Finally, this patch cleans up some comments in the start.S file. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Fabio Estevam <fabio.estevam@freescale.com> Cc: Stefano Babic <sbabic@denx.de>
135 lines
4.9 KiB
C
135 lines
4.9 KiB
C
/*
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* Freescale MX23EVK Boot setup
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*
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* Copyright (C) 2011 Marek Vasut <marek.vasut@gmail.com>
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* on behalf of DENX Software Engineering GmbH
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <config.h>
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#include <asm/io.h>
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#include <asm/arch/iomux-mx23.h>
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#include <asm/arch/imx-regs.h>
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#include <asm/arch/sys_proto.h>
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#define MUX_CONFIG_SSP1 (MXS_PAD_8MA | MXS_PAD_PULLUP)
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#define MUX_CONFIG_EMI (MXS_PAD_3V3 | MXS_PAD_12MA | MXS_PAD_PULLUP)
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#define MUX_CONFIG_LCD (MXS_PAD_4MA | MXS_PAD_NOPULL)
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const iomux_cfg_t iomux_setup[] = {
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/* DUART */
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MX23_PAD_PWM0__DUART_RX,
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MX23_PAD_PWM1__DUART_TX,
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/* EMI */
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MX23_PAD_EMI_D00__EMI_D00 | MUX_CONFIG_EMI,
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MX23_PAD_EMI_D01__EMI_D01 | MUX_CONFIG_EMI,
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MX23_PAD_EMI_D02__EMI_D02 | MUX_CONFIG_EMI,
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MX23_PAD_EMI_D03__EMI_D03 | MUX_CONFIG_EMI,
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MX23_PAD_EMI_D04__EMI_D04 | MUX_CONFIG_EMI,
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MX23_PAD_EMI_D05__EMI_D05 | MUX_CONFIG_EMI,
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MX23_PAD_EMI_D06__EMI_D06 | MUX_CONFIG_EMI,
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MX23_PAD_EMI_D07__EMI_D07 | MUX_CONFIG_EMI,
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MX23_PAD_EMI_D08__EMI_D08 | MUX_CONFIG_EMI,
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MX23_PAD_EMI_D09__EMI_D09 | MUX_CONFIG_EMI,
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MX23_PAD_EMI_D10__EMI_D10 | MUX_CONFIG_EMI,
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MX23_PAD_EMI_D11__EMI_D11 | MUX_CONFIG_EMI,
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MX23_PAD_EMI_D12__EMI_D12 | MUX_CONFIG_EMI,
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MX23_PAD_EMI_D13__EMI_D13 | MUX_CONFIG_EMI,
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MX23_PAD_EMI_D14__EMI_D14 | MUX_CONFIG_EMI,
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MX23_PAD_EMI_D15__EMI_D15 | MUX_CONFIG_EMI,
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MX23_PAD_EMI_DQM0__EMI_DQM0 | MUX_CONFIG_EMI,
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MX23_PAD_EMI_DQM1__EMI_DQM1 | MUX_CONFIG_EMI,
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MX23_PAD_EMI_DQS0__EMI_DQS0 | MUX_CONFIG_EMI,
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MX23_PAD_EMI_DQS1__EMI_DQS1 | MUX_CONFIG_EMI,
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MX23_PAD_EMI_CLK__EMI_CLK | MUX_CONFIG_EMI,
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MX23_PAD_EMI_CLKN__EMI_CLKN | MUX_CONFIG_EMI,
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MX23_PAD_EMI_A00__EMI_A00 | MUX_CONFIG_EMI,
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MX23_PAD_EMI_A01__EMI_A01 | MUX_CONFIG_EMI,
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MX23_PAD_EMI_A02__EMI_A02 | MUX_CONFIG_EMI,
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MX23_PAD_EMI_A03__EMI_A03 | MUX_CONFIG_EMI,
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MX23_PAD_EMI_A04__EMI_A04 | MUX_CONFIG_EMI,
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MX23_PAD_EMI_A05__EMI_A05 | MUX_CONFIG_EMI,
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MX23_PAD_EMI_A06__EMI_A06 | MUX_CONFIG_EMI,
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MX23_PAD_EMI_A07__EMI_A07 | MUX_CONFIG_EMI,
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MX23_PAD_EMI_A08__EMI_A08 | MUX_CONFIG_EMI,
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MX23_PAD_EMI_A09__EMI_A09 | MUX_CONFIG_EMI,
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MX23_PAD_EMI_A10__EMI_A10 | MUX_CONFIG_EMI,
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MX23_PAD_EMI_A11__EMI_A11 | MUX_CONFIG_EMI,
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MX23_PAD_EMI_A12__EMI_A12 | MUX_CONFIG_EMI,
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MX23_PAD_EMI_BA0__EMI_BA0 | MUX_CONFIG_EMI,
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MX23_PAD_EMI_BA1__EMI_BA1 | MUX_CONFIG_EMI,
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MX23_PAD_EMI_CASN__EMI_CASN | MUX_CONFIG_EMI,
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MX23_PAD_EMI_CE0N__EMI_CE0N | MUX_CONFIG_EMI,
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MX23_PAD_EMI_CE1N__EMI_CE1N | MUX_CONFIG_EMI,
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MX23_PAD_EMI_CKE__EMI_CKE | MUX_CONFIG_EMI,
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MX23_PAD_EMI_RASN__EMI_RASN | MUX_CONFIG_EMI,
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MX23_PAD_EMI_WEN__EMI_WEN | MUX_CONFIG_EMI,
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/* MMC 0 */
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MX23_PAD_SSP1_DATA0__SSP1_DATA0 | MUX_CONFIG_SSP1,
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MX23_PAD_SSP1_DATA1__SSP1_DATA1 | MUX_CONFIG_SSP1,
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MX23_PAD_SSP1_DATA2__SSP1_DATA2 | MUX_CONFIG_SSP1,
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MX23_PAD_SSP1_DATA3__SSP1_DATA3 | MUX_CONFIG_SSP1,
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MX23_PAD_SSP1_CMD__SSP1_CMD | MUX_CONFIG_SSP1,
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MX23_PAD_SSP1_DETECT__SSP1_DETECT | MUX_CONFIG_SSP1,
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(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
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MX23_PAD_SSP1_SCK__SSP1_SCK |
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(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
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/* Write Protect Pin */
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MX23_PAD_PWM4__GPIO_1_30 |
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(MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
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/* Slot Power Enable */
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MX23_PAD_PWM3__GPIO_1_29 |
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(MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
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/* LCD */
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MX23_PAD_LCD_D00__LCD_D00 | MUX_CONFIG_LCD,
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MX23_PAD_LCD_D01__LCD_D01 | MUX_CONFIG_LCD,
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MX23_PAD_LCD_D02__LCD_D02 | MUX_CONFIG_LCD,
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MX23_PAD_LCD_D03__LCD_D03 | MUX_CONFIG_LCD,
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MX23_PAD_LCD_D04__LCD_D04 | MUX_CONFIG_LCD,
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MX23_PAD_LCD_D05__LCD_D05 | MUX_CONFIG_LCD,
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MX23_PAD_LCD_D06__LCD_D06 | MUX_CONFIG_LCD,
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MX23_PAD_LCD_D07__LCD_D07 | MUX_CONFIG_LCD,
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MX23_PAD_LCD_D08__LCD_D08 | MUX_CONFIG_LCD,
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MX23_PAD_LCD_D09__LCD_D09 | MUX_CONFIG_LCD,
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MX23_PAD_LCD_D10__LCD_D10 | MUX_CONFIG_LCD,
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MX23_PAD_LCD_D11__LCD_D11 | MUX_CONFIG_LCD,
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MX23_PAD_LCD_D12__LCD_D12 | MUX_CONFIG_LCD,
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MX23_PAD_LCD_D13__LCD_D13 | MUX_CONFIG_LCD,
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MX23_PAD_LCD_D14__LCD_D14 | MUX_CONFIG_LCD,
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MX23_PAD_LCD_D15__LCD_D15 | MUX_CONFIG_LCD,
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MX23_PAD_LCD_D16__LCD_D16 | MUX_CONFIG_LCD,
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MX23_PAD_LCD_D17__LCD_D17 | MUX_CONFIG_LCD,
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MX23_PAD_GPMI_D08__LCD_D18 | MUX_CONFIG_LCD,
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MX23_PAD_GPMI_D09__LCD_D19 | MUX_CONFIG_LCD,
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MX23_PAD_GPMI_D10__LCD_D20 | MUX_CONFIG_LCD,
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MX23_PAD_GPMI_D11__LCD_D21 | MUX_CONFIG_LCD,
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MX23_PAD_GPMI_D12__LCD_D22 | MUX_CONFIG_LCD,
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MX23_PAD_GPMI_D13__LCD_D23 | MUX_CONFIG_LCD,
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MX23_PAD_LCD_DOTCK__LCD_DOTCK | MUX_CONFIG_LCD,
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MX23_PAD_LCD_ENABLE__LCD_ENABLE | MUX_CONFIG_LCD,
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MX23_PAD_LCD_HSYNC__LCD_HSYNC | MUX_CONFIG_LCD,
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MX23_PAD_LCD_VSYNC__LCD_VSYNC | MUX_CONFIG_LCD,
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MX23_PAD_LCD_RESET__GPIO_1_18 | MUX_CONFIG_LCD, /* LCD power */
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MX23_PAD_PWM2__GPIO_1_28 | MUX_CONFIG_LCD, /* LCD contrast */
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};
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#define HW_DRAM_CTL14 (0x38 >> 2)
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#define CS_MAP 0x3
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#define INTAREF 0x2
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#define HW_DRAM_CTL14_CONFIG (INTAREF << 8 | CS_MAP)
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void mxs_adjust_memory_params(uint32_t *dram_vals)
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{
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dram_vals[HW_DRAM_CTL14] = HW_DRAM_CTL14_CONFIG;
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}
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void board_init_ll(const uint32_t arg, const uint32_t *resptr)
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{
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mxs_common_spl_init(arg, resptr, iomux_setup, ARRAY_SIZE(iomux_setup));
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}
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