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/*
* On-chip UART initializaion for low-level debugging
*
* Copyright (C) 2014-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <linux/linkage.h>
#include <mach/bcu-regs.h>
#include <mach/sc-regs.h>
#include <mach/sg-regs.h>
#define UART_CLK 36864000
#include <mach/debug-uart.S>
ENTRY(setup_lowlevel_debug)
ldr r0, =BCSCR5
ldr r1, =0x24440000
str r1, [r0]
ldr r0, =SC_CLKCTRL
ldr r1, [r0]
orr r1, r1, #SC_CLKCTRL_CEN_PERI
str r1, [r0]
init_debug_uart r0, r1, r2
set_pinsel 63, 0, r0, r1
set_pinsel 64, 1, r0, r1
mov pc, lr
ENDPROC(setup_lowlevel_debug)
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