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>
91 lines
3.1 KiB
C
91 lines
3.1 KiB
C
/*
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* Olimex MX23 Olinuxino Boot setup
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*
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* Copyright (C) 2013 Marek Vasut <marex@denx.de>
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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_EMI (MXS_PAD_3V3 | MXS_PAD_12MA | MXS_PAD_PULLUP)
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#define MUX_CONFIG_SSP (MXS_PAD_8MA | MXS_PAD_PULLUP)
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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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/* Green LED */
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MX23_PAD_SSP1_DETECT__GPIO_2_1 |
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(MXS_PAD_3V3 | MXS_PAD_4MA | MXS_PAD_NOPULL),
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/* MMC 0 */
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MX23_PAD_SSP1_CMD__SSP1_CMD | MUX_CONFIG_SSP,
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MX23_PAD_SSP1_DATA0__SSP1_DATA0 | MUX_CONFIG_SSP,
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MX23_PAD_SSP1_DATA1__SSP1_DATA1 | MUX_CONFIG_SSP,
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MX23_PAD_SSP1_DATA2__SSP1_DATA2 | MUX_CONFIG_SSP,
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MX23_PAD_SSP1_DATA3__SSP1_DATA3 | MUX_CONFIG_SSP,
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MX23_PAD_SSP1_SCK__SSP1_SCK | MUX_CONFIG_SSP,
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/* Ethernet */
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MX23_PAD_GPMI_ALE__GPIO_0_17 |
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(MXS_PAD_3V3 | MXS_PAD_12MA | MXS_PAD_NOPULL),
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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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