From ea6de4ac806f7e81960f642dacbaa9c53b30e9ed Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Fri, 27 Feb 2015 02:27:02 +0900 Subject: ARM: UniPhier: support 1CS support card for all the UniPhier SoCs 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 --- arch/arm/mach-uniphier/ph1-sld8/sbc_init_3cs.c | 58 ++++++++++++++++++++++++++ 1 file changed, 58 insertions(+) create mode 100644 arch/arm/mach-uniphier/ph1-sld8/sbc_init_3cs.c (limited to 'arch/arm/mach-uniphier/ph1-sld8/sbc_init_3cs.c') diff --git a/arch/arm/mach-uniphier/ph1-sld8/sbc_init_3cs.c b/arch/arm/mach-uniphier/ph1-sld8/sbc_init_3cs.c new file mode 100644 index 0000000000..fdef88e126 --- /dev/null +++ b/arch/arm/mach-uniphier/ph1-sld8/sbc_init_3cs.c @@ -0,0 +1,58 @@ +/* + * Copyright (C) 2011-2015 Panasonic Corporation + * Author: Masahiro Yamada + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include + +void sbc_init(void) +{ + u32 tmp; + + /* system bus output enable */ + tmp = readl(PC0CTRL); + tmp &= 0xfffffcff; + writel(tmp, PC0CTRL); + + /* + * SBCTRL0* does not need settings because PH1-sLD8 has no support for + * XECS0. The boot swap must be enabled to boot from the support card. + */ + + if (boot_is_swapped()) { + /* XECS1 : boot memory if boot swap is on */ + writel(SBCTRL0_SAVEPIN_MEM_VALUE, SBCTRL10); + writel(SBCTRL1_SAVEPIN_MEM_VALUE, SBCTRL11); + writel(SBCTRL2_SAVEPIN_MEM_VALUE, SBCTRL12); + writel(SBCTRL4_SAVEPIN_MEM_VALUE, SBCTRL14); + } + + /* XECS4 : sub memory */ + writel(SBCTRL0_SAVEPIN_MEM_VALUE, SBCTRL40); + writel(SBCTRL1_SAVEPIN_MEM_VALUE, SBCTRL41); + writel(SBCTRL2_SAVEPIN_MEM_VALUE, SBCTRL42); + writel(SBCTRL4_SAVEPIN_MEM_VALUE, SBCTRL44); + + /* XECS5 : peripherals */ + writel(SBCTRL0_SAVEPIN_PERI_VALUE, SBCTRL50); + writel(SBCTRL1_SAVEPIN_PERI_VALUE, SBCTRL51); + writel(SBCTRL2_SAVEPIN_PERI_VALUE, SBCTRL52); + writel(SBCTRL4_SAVEPIN_PERI_VALUE, SBCTRL54); + + /* base address regsiters */ + writel(0x0000bc01, SBBASE0); /* boot memory */ + writel(0x0900bfff, SBBASE1); /* dummy */ + writel(0x0400bc01, SBBASE4); /* sub memory */ + writel(0x0800bf01, SBBASE5); /* peripherals */ + + sg_set_pinsel(134, 16); /* XIRQ6 -> XECS4 */ + sg_set_pinsel(135, 16); /* XIRQ7 -> XECS5 */ + + /* dummy read to assure write process */ + readl(SG_PINCTRL(0)); +} -- cgit