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108 lines
2.1 KiB
C
108 lines
2.1 KiB
C
#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/bootmem.h>
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#include <linux/etherdevice.h>
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#include <asm/bootinfo.h>
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#include <machine.h>
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#include <ifxmips.h>
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#include <ifxmips_prom.h>
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/* for Multithreading (APRP) on MIPS34K */
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unsigned long physical_memsize;
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void
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prom_free_prom_memory(void)
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{
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}
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extern unsigned char ifxmips_ethaddr[6];
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int cmdline_mac = 0;
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static int __init
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ifxmips_set_ethaddr(char *str)
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{
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#define IS_HEX(x) \
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(((x >= '0' && x <= '9') || (x >= 'a' && x <= 'f') \
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|| (x >= 'A' && x <= 'F')) ? (1) : (0))
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int i;
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str = strchr(str, '=');
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if (!str)
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goto out;
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str++;
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if (strlen(str) != 17)
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goto out;
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for (i = 0; i < 6; i++) {
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if (!IS_HEX(str[3 * i]) || !IS_HEX(str[(3 * i) + 1]))
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goto out;
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if ((i != 5) && (str[(3 * i) + 2] != ':'))
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goto out;
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ifxmips_ethaddr[i] = simple_strtoul(&str[3 * i], NULL, 16);
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}
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if (is_valid_ether_addr(ifxmips_ethaddr))
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cmdline_mac = 1;
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out:
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return 1;
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}
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__setup("ethaddr", ifxmips_set_ethaddr);
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static void __init prom_detect_machtype(void)
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{
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mips_machtype = IFXMIPS_MACH_EASY50712;
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}
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static void __init prom_init_cmdline(void)
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{
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int argc = fw_arg0;
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char **argv = (char **) fw_arg1;
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char **envp = (char **) fw_arg2;
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int memsize = 16; /* assume 16M as default */
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int i;
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if (argc)
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{
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argv = (char **)KSEG1ADDR((unsigned long)argv);
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arcs_cmdline[0] = '\0';
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for (i = 1; i < argc; i++)
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{
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char *a = (char *)KSEG1ADDR(argv[i]);
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if (!argv[i])
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continue;
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if (strlen(arcs_cmdline) + strlen(a + 1) >= sizeof(arcs_cmdline))
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{
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early_printf("cmdline overflow, skipping: %s\n", a);
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break;
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}
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strcat(arcs_cmdline, a);
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strcat(arcs_cmdline, " ");
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}
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if (!*arcs_cmdline)
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strcpy(&(arcs_cmdline[0]),
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"console=ttyS0,115200 rootfstype=squashfs,jffs2");
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}
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envp = (char **)KSEG1ADDR((unsigned long)envp);
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while (*envp)
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{
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char *e = (char *)KSEG1ADDR(*envp);
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if (!strncmp(e, "memsize=", 8))
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{
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e += 8;
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memsize = simple_strtoul(e, NULL, 10);
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}
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envp++;
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}
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memsize *= 1024 * 1024;
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add_memory_region(0x00000000, memsize, BOOT_MEM_RAM);
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}
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void __init
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prom_init(void)
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{
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prom_detect_machtype();
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prom_init_cmdline();
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}
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