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/*
*
* Per Hallsmark, per.hallsmark@mvista.com
*
* Based on jmr3927/common/prom.c
*
* 2004 (c) MontaVista Software, Inc. This file is licensed under the
* terms of the GNU General Public License version 2. This program is
* licensed "as is" without any warranty of any kind, whether express
* or implied.
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/string.h>
#include <linux/serial_pnx8xxx.h>
#include <asm/bootinfo.h>
#include <uart.h>
/* #define DEBUG_CMDLINE */
extern int prom_argc;
extern char **prom_argv, **prom_envp;
typedef struct
{
char *name;
/* char *val; */
}t_env_var;
char * prom_getcmdline(void)
{
return &(arcs_cmdline[0]);
}
void prom_init_cmdline(void)
{
char *cp;
int actr;
actr = 1; /* Always ignore argv[0] */
cp = &(arcs_cmdline[0]);
while(actr < prom_argc) {
strcpy(cp, prom_argv[actr]);
cp += strlen(prom_argv[actr]);
*cp++ = ' ';
actr++;
}
if (cp != &(arcs_cmdline[0])) /* get rid of trailing space */
--cp;
*cp = '\0';
}
char *prom_getenv(char *envname)
{
/*
* Return a pointer to the given environment variable.
* Environment variables are stored in the form of "memsize=64".
*/
t_env_var *env = (t_env_var *)prom_envp;
int i;
i = strlen(envname);
while(env->name) {
if(strncmp(envname, env->name, i) == 0) {
return(env->name + strlen(envname) + 1);
}
env++;
}
return(NULL);
}
inline unsigned char str2hexnum(unsigned char c)
{
if(c >= '0' && c <= '9')
return c - '0';
if(c >= 'a' && c <= 'f')
return c - 'a' + 10;
if(c >= 'A' && c <= 'F')
return c - 'A' + 10;
return 0; /* foo */
}
inline void str2eaddr(unsigned char *ea, unsigned char *str)
{
int i;
for(i = 0; i < 6; i++) {
unsigned char num;
if((*str == '.') || (*str == ':'))
str++;
num = str2hexnum(*str++) << 4;
num |= (str2hexnum(*str++));
ea[i] = num;
}
}
int get_ethernet_addr(char *ethernet_addr)
{
char *ethaddr_str;
ethaddr_str = prom_getenv("ethaddr");
if (!ethaddr_str) {
printk("ethaddr not set in boot prom\n");
return -1;
}
str2eaddr(ethernet_addr, ethaddr_str);
return 0;
}
unsigned long __init prom_free_prom_memory(void)
{
return 0;
}
extern int pnx8550_console_port;
/* used by prom_printf */
void prom_putchar(char c)
{
if (pnx8550_console_port != -1) {
/* Wait until FIFO not full */
while( ((ip3106_fifo(UART_BASE, pnx8550_console_port) & PNX8XXX_UART_FIFO_TXFIFO) >> 16) >= 16)
;
/* Send one char */
ip3106_fifo(UART_BASE, pnx8550_console_port) = c;
}
}
EXPORT_SYMBOL(prom_getcmdline);
EXPORT_SYMBOL(get_ethernet_addr);
EXPORT_SYMBOL(str2eaddr);
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