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/*
* On-chip UART initializaion for low-level debugging
*
* Copyright (C) 2014 Panasonic Corporation
* Author: Masahiro Yamada <yamada.m@jp.panasonic.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <linux/linkage.h>
#include <mach/sc-regs.h>
#include <mach/sg-regs.h>
#define UART_CLK 73728000
#include <mach/debug-uart.S>
ENTRY(setup_lowlevel_debug)
ldr r0, =SC_CLKCTRL
ldr r1, [r0]
orr r1, r1, #SC_CLKCTRL_CEN_PERI
str r1, [r0]
init_debug_uart r0, r1, r2
/* UART Port 0 */
sg_set_pinsel 127, 0, 4, 8, r0, r1
sg_set_pinsel 128, 0, 4, 8, r0, r1
ldr r0, =SG_LOADPINCTRL
mov r1, #1
str r1, [r0]
ldr r0, =SG_IECTRL
ldr r1, [r0]
orr r1, r1, #1
str r1, [r0]
mov pc, lr
ENDPROC(setup_lowlevel_debug)
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