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ARM: socfpga: Fix socfpga compilation with early_printk() enabled 

This fixes early_printk() compilation for
socfpga. (senduart/busyuart/waituart were missing). It does that by
making Picochip code generic.

Signed-off-by: Pavel Machek <pavel@denx.de>
Acked-by: Dinh Nguyen <dinguyen@altera.com>
Acked-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Pavel Machek 2012-10-17 20:16:48 +02:00 committed by Arnd Bergmann
parent 5e3059b2cb
commit ef3f94412a
3 changed files with 33 additions and 17 deletions
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27
arch/arm/include/debug/8250_32.S Normal file
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@ -0,0 +1,27 @@
/*
* Copyright (c) 2011 Picochip Ltd., Jamie Iles
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* Derived from arch/arm/mach-davinci/include/mach/debug-macro.S to use 32-bit
* accesses to the 8250.
*/
#include <linux/serial_reg.h>
.macro senduart,rd,rx
str \rd, [\rx, #UART_TX << UART_SHIFT]
.endm
.macro busyuart,rd,rx
1002: ldr \rd, [\rx, #UART_LSR << UART_SHIFT]
and \rd, \rd, #UART_LSR_TEMT | UART_LSR_THRE
teq \rd, #UART_LSR_TEMT | UART_LSR_THRE
bne 1002b
.endm
/* The UART's don't have any flow control IO's wired up. */
.macro waituart,rd,rx
.endm

18
arch/arm/include/debug/picoxcell.S
View File

@ -5,10 +5,7 @@
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* Derived from arch/arm/mach-davinci/include/mach/debug-macro.S to use 32-bit
* accesses to the 8250.
*/
#include <linux/serial_reg.h>
#define UART_SHIFT 2
#define PICOXCELL_UART1_BASE 0x80230000
@ -19,17 +16,4 @@
ldr \rp, =PICOXCELL_UART1_BASE
.endm
.macro senduart,rd,rx
str \rd, [\rx, #UART_TX << UART_SHIFT]
.endm
.macro busyuart,rd,rx
1002: ldr \rd, [\rx, #UART_LSR << UART_SHIFT]
and \rd, \rd, #UART_LSR_TEMT | UART_LSR_THRE
teq \rd, #UART_LSR_TEMT | UART_LSR_THRE
bne 1002b
.endm
/* The UART's don't have any flow control IO's wired up. */
.macro waituart,rd,rx
.endm
#include "8250_32.S"

5
arch/arm/include/debug/socfpga.S
View File

@ -7,6 +7,9 @@
* published by the Free Software Foundation.
*/
#define UART_SHIFT 2
#define DEBUG_LL_UART_OFFSET 0x00002000
.macro addruart, rp, rv, tmp
mov \rp, #DEBUG_LL_UART_OFFSET
orr \rp, \rp, #0x00c00000
@ -14,3 +17,5 @@
orr \rp, \rp, #0xff000000 @ physical base
.endm
#include "8250_32.S"