165 lines
4.2 KiB
C
165 lines
4.2 KiB
C
/*
|
|
* prom.c
|
|
**********************************************************************
|
|
* P . Sadik Oct 10, 2003
|
|
*
|
|
* Started change log
|
|
* idt_cpu_freq is make a kernel configuration parameter
|
|
* idt_cpu_freq is exported so that other modules can use it.
|
|
* Code cleanup
|
|
**********************************************************************
|
|
* P. Sadik Oct 20, 2003
|
|
*
|
|
* Removed NVRAM code from here, since they are already available under
|
|
* nvram directory.
|
|
* Added serial port initialisation.
|
|
**********************************************************************
|
|
**********************************************************************
|
|
* P. Sadik Oct 30, 2003
|
|
*
|
|
* Added reset_cons_port
|
|
**********************************************************************
|
|
|
|
P.Christeas, 2005-2006
|
|
Port to 2.6, add 2.6 cmdline parsing
|
|
|
|
*/
|
|
|
|
#include <linux/autoconf.h>
|
|
#include <linux/init.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/module.h>
|
|
#include <linux/string.h>
|
|
#include <linux/console.h>
|
|
#include <asm/bootinfo.h>
|
|
#include <linux/bootmem.h>
|
|
#include <linux/ioport.h>
|
|
#include <linux/blkdev.h>
|
|
#include <asm/rc32434/ddr.h>
|
|
|
|
#define PROM_ENTRY(x) (0xbfc00000+((x)*8))
|
|
extern void __init setup_serial_port(void);
|
|
|
|
unsigned int idt_cpu_freq = 132000000;
|
|
EXPORT_SYMBOL(idt_cpu_freq);
|
|
char *board_type;
|
|
EXPORT_SYMBOL(board_type);
|
|
unsigned int gpio_bootup_state = 0;
|
|
EXPORT_SYMBOL(gpio_bootup_state);
|
|
|
|
|
|
char mips_mac_address[18] = "08:00:06:05:40:01";
|
|
EXPORT_SYMBOL(mips_mac_address);
|
|
|
|
/* what to append to cmdline when button is [not] pressed */
|
|
#define GPIO_INIT_NOBUTTON ""
|
|
#define GPIO_INIT_BUTTON " 2"
|
|
|
|
#ifdef CONFIG_MIKROTIK_RB500
|
|
unsigned soft_reboot = 0;
|
|
EXPORT_SYMBOL(soft_reboot);
|
|
#endif
|
|
|
|
#define SR_NMI 0x00180000 /* NMI */
|
|
#define SERIAL_SPEED_ENTRY 0x00000001
|
|
|
|
#ifdef CONFIG_REMOTE_DEBUG
|
|
extern int remote_debug;
|
|
#endif
|
|
|
|
extern unsigned long mips_machgroup;
|
|
extern unsigned long mips_machtype;
|
|
|
|
#define FREQ_TAG "HZ="
|
|
#define GPIO_TAG "gpio="
|
|
#define KMAC_TAG "kmac="
|
|
#define MEM_TAG "mem="
|
|
#define BOARD_TAG "board="
|
|
#define IGNORE_CMDLINE_MEM 1
|
|
#define DEBUG_DDR
|
|
|
|
void parse_soft_settings(unsigned *ptr, unsigned size);
|
|
void parse_hard_settings(unsigned *ptr, unsigned size);
|
|
|
|
void __init prom_setup_cmdline(void);
|
|
|
|
void __init prom_init(void)
|
|
{
|
|
DDR_t ddr = (DDR_t) DDR_VirtualAddress; /* define the pointer to the DDR registers */
|
|
phys_t memsize = 0-ddr->ddrmask;
|
|
|
|
/* this should be the very first message, even before serial is properly initialized */
|
|
prom_setup_cmdline();
|
|
setup_serial_port();
|
|
|
|
mips_machgroup = MACH_GROUP_MIKROTIK;
|
|
soft_reboot = read_c0_status() & SR_NMI;
|
|
pm_power_off = NULL;
|
|
|
|
/*
|
|
* give all RAM to boot allocator,
|
|
* except for the first 0x400 and the last 0x200 bytes
|
|
*/
|
|
add_memory_region(ddr->ddrbase + 0x400, memsize - 0x600, BOOT_MEM_RAM);
|
|
}
|
|
|
|
void prom_free_prom_memory(void)
|
|
{
|
|
/* FIXME: STUB */
|
|
}
|
|
|
|
extern char _image_cmdline;
|
|
void __init prom_setup_cmdline(void){
|
|
char cmd_line[CL_SIZE];
|
|
char *cp;
|
|
int prom_argc;
|
|
char **prom_argv, **prom_envp;
|
|
int i;
|
|
|
|
prom_argc = fw_arg0;
|
|
prom_argv = (char **) fw_arg1;
|
|
prom_envp = (char **) fw_arg2;
|
|
|
|
cp=cmd_line;
|
|
/* Note: it is common that parameters start at argv[1] and not argv[0],
|
|
however, our elf loader starts at [0] */
|
|
for(i=0;i<prom_argc;i++){
|
|
if (strncmp(prom_argv[i], FREQ_TAG, sizeof(FREQ_TAG) - 1) == 0) {
|
|
idt_cpu_freq = simple_strtoul(prom_argv[i] + sizeof(FREQ_TAG) - 1, 0, 10);
|
|
continue;
|
|
}
|
|
#ifdef IGNORE_CMDLINE_MEM
|
|
/* parses out the "mem=xx" arg */
|
|
if (strncmp(prom_argv[i], MEM_TAG, sizeof(MEM_TAG) - 1) == 0) {
|
|
continue;
|
|
}
|
|
#endif
|
|
if (i>0) *(cp++) = ' ';
|
|
if (strncmp(prom_argv[i], BOARD_TAG, sizeof(BOARD_TAG) - 1) == 0) {
|
|
strcpy(board_type, prom_argv[i] + sizeof(BOARD_TAG) -1);
|
|
}
|
|
if (strncmp(prom_argv[i], GPIO_TAG, sizeof(GPIO_TAG) - 1) == 0) {
|
|
gpio_bootup_state = simple_strtoul(prom_argv[i] + sizeof(GPIO_TAG) - 1, 0, 10);
|
|
}
|
|
strcpy(cp,prom_argv[i]);
|
|
cp+=strlen(prom_argv[i]);
|
|
}
|
|
*(cp++) = ' ';
|
|
strcpy(cp,(&_image_cmdline + 8));
|
|
cp += strlen(&_image_cmdline);
|
|
|
|
i=strlen(arcs_cmdline);
|
|
if (i>0){
|
|
*(cp++) = ' ';
|
|
strcpy(cp,arcs_cmdline);
|
|
cp+=strlen(arcs_cmdline);
|
|
}
|
|
if (gpio_bootup_state&0x02)
|
|
strcpy(cp,GPIO_INIT_NOBUTTON);
|
|
else
|
|
strcpy(cp,GPIO_INIT_BUTTON);
|
|
cmd_line[CL_SIZE-1] = '\0';
|
|
|
|
strcpy(arcs_cmdline,cmd_line);
|
|
}
|
|
|