mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-02 17:41:08 +00:00
f267b81e20
Follow the register macros in the LSI specification book. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
39 lines
745 B
ArmAsm
39 lines
745 B
ArmAsm
/*
|
|
* 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 */
|
|
set_pinsel 127, 0, r0, r1
|
|
set_pinsel 128, 0, 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)
|