mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-15 11:25:20 +02:00
809c03fe4c
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@19098 3c298f89-4303-0410-b956-a3cf2f4a3e73
112 lines
2.9 KiB
C
112 lines
2.9 KiB
C
/*
|
|
*
|
|
* BRIEF MODULE DESCRIPTION
|
|
* PROM library initialisation code, supports YAMON and U-Boot.
|
|
*
|
|
* Copyright 2000, 2001, 2006 MontaVista Software Inc.
|
|
* Author: MontaVista Software, Inc.
|
|
* ppopov@mvista.com or source@mvista.com
|
|
*
|
|
* This file was derived from Carsten Langgaard's
|
|
* arch/mips/mips-boards/xx files.
|
|
*
|
|
* Carsten Langgaard, carstenl@mips.com
|
|
* Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the
|
|
* Free Software Foundation; either version 2 of the License, or (at your
|
|
* option) any later version.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
|
|
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
|
|
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
|
|
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
|
|
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/string.h>
|
|
|
|
#include <asm/bootinfo.h>
|
|
#include <asm/mach-jz4740/regs.h>
|
|
|
|
/* #define DEBUG_CMDLINE */
|
|
|
|
int prom_argc;
|
|
char **prom_argv, **prom_envp;
|
|
|
|
char *prom_getcmdline(void)
|
|
{
|
|
return &(arcs_cmdline[0]);
|
|
}
|
|
|
|
void prom_init_cmdline(void)
|
|
{
|
|
char *cp, *c;
|
|
size_t i = 1;
|
|
|
|
cp = &(arcs_cmdline[0]);
|
|
while(i < prom_argc) {
|
|
c = prom_argv[i];
|
|
while (*c) {
|
|
*cp++ = *c++;
|
|
}
|
|
*cp++ = ' ';
|
|
i++;
|
|
}
|
|
if (i > 1) {
|
|
*(cp - 1) = '\0';
|
|
}
|
|
|
|
}
|
|
|
|
void __init prom_init(void)
|
|
{
|
|
unsigned long memsize;
|
|
|
|
prom_argc = (int) fw_arg0;
|
|
prom_argv = (char **) fw_arg1;
|
|
prom_envp = (char **) fw_arg2;
|
|
|
|
mips_machtype = MACH_INGENIC_JZ4740;
|
|
|
|
prom_init_cmdline();
|
|
memsize = 0x04000000;
|
|
add_memory_region(0, memsize, BOOT_MEM_RAM);
|
|
}
|
|
|
|
void __init prom_free_prom_memory(void)
|
|
{
|
|
}
|
|
|
|
/* used by early printk */
|
|
void prom_putchar(char c)
|
|
{
|
|
volatile u8 *uart_lsr = (volatile u8 *)(UART0_BASE + OFF_LSR);
|
|
volatile u8 *uart_tdr = (volatile u8 *)(UART0_BASE + OFF_TDR);
|
|
|
|
/* Wait for fifo to shift out some bytes */
|
|
while ( !((*uart_lsr & (UARTLSR_TDRQ | UARTLSR_TEMT)) == 0x60) );
|
|
|
|
*uart_tdr = (u8)c;
|
|
}
|
|
|
|
const char *get_system_type(void)
|
|
{
|
|
return "JZ4740";
|
|
}
|
|
|
|
EXPORT_SYMBOL(prom_getcmdline);
|