u-boot/board/qca/ap121/ap121.c
Wills Wang 6a7b52bc8d mips: ath79: add AP121 reference board
This patch add board-level code and base DT for AP121.

Signed-off-by: Wills Wang <wills.wang@live.com>
[updated defconfig, enabled CONFIG_USE_PRIVATE_LIBGCC=y]
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
2016-05-21 01:25:50 +02:00

50 lines
989 B
C

/*
* Copyright (C) 2015-2016 Wills Wang <wills.wang@live.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/io.h>
#include <asm/addrspace.h>
#include <asm/types.h>
#include <mach/ar71xx_regs.h>
#include <mach/ddr.h>
#include <debug_uart.h>
DECLARE_GLOBAL_DATA_PTR;
#ifdef CONFIG_DEBUG_UART_BOARD_INIT
void board_debug_uart_init(void)
{
void __iomem *regs;
u32 val;
regs = map_physmem(AR71XX_GPIO_BASE, AR71XX_GPIO_SIZE,
MAP_NOCACHE);
/*
* GPIO9 as input, GPIO10 as output
*/
val = readl(regs + AR71XX_GPIO_REG_OE);
val &= ~AR933X_GPIO(9);
val |= AR933X_GPIO(10);
writel(val, regs + AR71XX_GPIO_REG_OE);
/*
* Enable UART, GPIO9 as UART_SI, GPIO10 as UART_SO
*/
val = readl(regs + AR71XX_GPIO_REG_FUNC);
val |= AR933X_GPIO_FUNC_UART_EN | AR933X_GPIO_FUNC_RES_TRUE;
writel(val, regs + AR71XX_GPIO_REG_FUNC);
}
#endif
int board_early_init_f(void)
{
#ifdef CONFIG_DEBUG_UART
debug_uart_init();
#endif
ddr_init();
return 0;
}