ARM: uniphier: allow to enable multiple SoCs
Before this commit, the Kconfig menu in mach-uniphier only allowed us
to choose one SoC to be compiled. Each SoC has its own defconfig file
for the build-test coverage. Consequently, some defconfig files are
duplicated with only the difference in CONFIG_DEFAULT_DEVICE_TREE and
CONFIG_{SOC_NAME}=y.
Now, most of board-specific parameters have been moved to device trees,
so it makes sense to include init code of multiple SoCs into a single
image as long as the SoCs have similar architecture. In fact, some
SoCs of UniPhier family are very similar:
- PH1-LD4 and PH1-sLD8
- PH1-LD6b and ProXstream2 (will be added in the upcoming commit)
This commit will be helpful to merge some defconfig files for better
maintainability.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/arch/arm/mach-uniphier/sbc/sbc-ph1-pro4.c b/arch/arm/mach-uniphier/sbc/sbc-ph1-pro4.c
new file mode 100644
index 0000000..1032c54
--- /dev/null
+++ b/arch/arm/mach-uniphier/sbc/sbc-ph1-pro4.c
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2011-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <linux/io.h>
+#include <mach/init.h>
+#include <mach/sbc-regs.h>
+#include <mach/sg-regs.h>
+
+int ph1_pro4_sbc_init(const struct uniphier_board_data *bd)
+{
+ /*
+ * Only CS1 is connected to support card.
+ * BKSZ[1:0] should be set to "01".
+ */
+ writel(SBCTRL0_SAVEPIN_PERI_VALUE, SBCTRL10);
+ writel(SBCTRL1_SAVEPIN_PERI_VALUE, SBCTRL11);
+ writel(SBCTRL2_SAVEPIN_PERI_VALUE, SBCTRL12);
+ writel(SBCTRL4_SAVEPIN_PERI_VALUE, SBCTRL14);
+
+ if (boot_is_swapped()) {
+ /*
+ * Boot Swap On: boot from external NOR/SRAM
+ * 0x42000000-0x43ffffff is a mirror of 0x40000000-0x41ffffff.
+ *
+ * 0x40000000-0x41efffff, 0x42000000-0x43efffff: memory bank
+ * 0x41f00000-0x41ffffff, 0x43f00000-0x43ffffff: peripherals
+ */
+ writel(0x0000bc01, SBBASE0);
+ } else {
+ /*
+ * Boot Swap Off: boot from mask ROM
+ * 0x40000000-0x41ffffff: mask ROM
+ * 0x42000000-0x43efffff: memory bank (31MB)
+ * 0x43f00000-0x43ffffff: peripherals (1MB)
+ */
+ writel(0x0000be01, SBBASE0); /* dummy */
+ writel(0x0200be01, SBBASE1);
+ }
+
+ return 0;
+}