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 <yamada.m@jp.panasonic.com>
diff --git a/arch/arm/mach-uniphier/ph1-ld4/sbc_init_3cs.c b/arch/arm/mach-uniphier/ph1-ld4/sbc_init_3cs.c
new file mode 100644
index 0000000..374a8c0
--- /dev/null
+++ b/arch/arm/mach-uniphier/ph1-ld4/sbc_init_3cs.c
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2011-2015 Panasonic Corporation
+ * Author: Masahiro Yamada <yamada.m@jp.panasonic.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <mach/sbc-regs.h>
+#include <mach/sg-regs.h>
+
+void sbc_init(void)
+{
+ u32 tmp;
+
+ /* system bus output enable */
+ tmp = readl(PC0CTRL);
+ tmp &= 0xfffffcff;
+ writel(tmp, PC0CTRL);
+
+ /* XECS1: sub/boot memory (boot swap = off/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);
+
+ /* XECS0: boot/sub memory (boot swap = off/on) */
+ writel(SBCTRL0_SAVEPIN_MEM_VALUE, SBCTRL00);
+ writel(SBCTRL1_SAVEPIN_MEM_VALUE, SBCTRL01);
+ writel(SBCTRL2_SAVEPIN_MEM_VALUE, SBCTRL02);
+ writel(SBCTRL4_SAVEPIN_MEM_VALUE, SBCTRL04);
+
+ /* XECS3: peripherals */
+ writel(SBCTRL0_SAVEPIN_PERI_VALUE, SBCTRL30);
+ writel(SBCTRL1_SAVEPIN_PERI_VALUE, SBCTRL31);
+ writel(SBCTRL2_SAVEPIN_PERI_VALUE, SBCTRL32);
+ writel(SBCTRL4_SAVEPIN_PERI_VALUE, SBCTRL34);
+
+ /* base address regsiters */
+ writel(0x0000bc01, SBBASE0);
+ writel(0x0400bc01, SBBASE1);
+ writel(0x0800bf01, SBBASE3);
+
+ /* enable access to sub memory when boot swap is on */
+ if (boot_is_swapped())
+ sg_set_pinsel(155, 1); /* PORT24 -> XECS0 */
+
+ sg_set_pinsel(156, 1); /* PORT25 -> XECS3 */
+}