u-boot/arch/arm/mach-uniphier/sbc/sbc-ph1-ld4.c
Masahiro Yamada 323d1f9d5b 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>
2015-09-25 00:58:38 +09:00

52 lines
1.3 KiB
C

/*
* 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_ld4_sbc_init(const struct uniphier_board_data *bd)
{
u32 tmp;
/* system bus output enable */
tmp = readl(PC0CTRL);
tmp &= 0xfffffcff;
writel(tmp, PC0CTRL);
/*
* 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;
}