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https://github.com/AsahiLinux/u-boot
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ea6de4ac80
Two support card variants are used with UniPhier reference boards: - 1 chip select support card (original CPLD) - 3 chip selects support card (ARIMA-compatible CPLD) Currently, the former is only supported on PH1-Pro4, but it can be expanded to PH1-LD4, PH1-sLD8 with a little code change. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
58 lines
1.6 KiB
C
58 lines
1.6 KiB
C
/*
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* Copyright (C) 2011-2015 Panasonic Corporation
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* Author: Masahiro Yamada <yamada.m@jp.panasonic.com>
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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 <asm/io.h>
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#include <mach/sbc-regs.h>
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#include <mach/sg-regs.h>
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void sbc_init(void)
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{
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u32 tmp;
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/* system bus output enable */
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tmp = readl(PC0CTRL);
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tmp &= 0xfffffcff;
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writel(tmp, PC0CTRL);
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/*
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* SBCTRL0* does not need settings because PH1-sLD8 has no support for
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* XECS0. The boot swap must be enabled to boot from the support card.
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*/
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if (boot_is_swapped()) {
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/* XECS1 : boot memory if boot swap is on */
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writel(SBCTRL0_SAVEPIN_MEM_VALUE, SBCTRL10);
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writel(SBCTRL1_SAVEPIN_MEM_VALUE, SBCTRL11);
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writel(SBCTRL2_SAVEPIN_MEM_VALUE, SBCTRL12);
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writel(SBCTRL4_SAVEPIN_MEM_VALUE, SBCTRL14);
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}
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/* XECS4 : sub memory */
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writel(SBCTRL0_SAVEPIN_MEM_VALUE, SBCTRL40);
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writel(SBCTRL1_SAVEPIN_MEM_VALUE, SBCTRL41);
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writel(SBCTRL2_SAVEPIN_MEM_VALUE, SBCTRL42);
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writel(SBCTRL4_SAVEPIN_MEM_VALUE, SBCTRL44);
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/* XECS5 : peripherals */
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writel(SBCTRL0_SAVEPIN_PERI_VALUE, SBCTRL50);
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writel(SBCTRL1_SAVEPIN_PERI_VALUE, SBCTRL51);
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writel(SBCTRL2_SAVEPIN_PERI_VALUE, SBCTRL52);
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writel(SBCTRL4_SAVEPIN_PERI_VALUE, SBCTRL54);
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/* base address regsiters */
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writel(0x0000bc01, SBBASE0); /* boot memory */
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writel(0x0900bfff, SBBASE1); /* dummy */
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writel(0x0400bc01, SBBASE4); /* sub memory */
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writel(0x0800bf01, SBBASE5); /* peripherals */
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sg_set_pinsel(134, 16); /* XIRQ6 -> XECS4 */
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sg_set_pinsel(135, 16); /* XIRQ7 -> XECS5 */
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/* dummy read to assure write process */
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readl(SG_PINCTRL(0));
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}
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