1 files changed, 131 insertions, 0 deletions
diff --git a/target/linux/ifxmips/files-2.6.33/arch/mips/ifxmips/common/prom.c b/target/linux/ifxmips/files-2.6.33/arch/mips/ifxmips/common/prom.c
new file mode 100644
index 0000000..98de8fb
--- /dev/null
+++ b/target/linux/ifxmips/files-2.6.33/arch/mips/ifxmips/common/prom.c
@@ -0,0 +1,131 @@
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/bootmem.h>
+#include <linux/etherdevice.h>
+
+#include <asm/bootinfo.h>
+
+#include <ifxmips.h>
+#include <ifxmips_prom.h>
+
+/* for voice cpu (MIPS24K) */
+unsigned int *prom_cp1_base;
+unsigned int prom_cp1_size;
+
+/* for Multithreading (APRP) on MIPS34K */
+unsigned long physical_memsize;
+
+void
+prom_free_prom_memory(void)
+{
+}
+
+unsigned int*
+prom_get_cp1_base(void)
+{
+	return prom_cp1_base;
+}
+EXPORT_SYMBOL(prom_get_cp1_base);
+
+unsigned int
+prom_get_cp1_size(void)
+{
+	/* return size im MB */
+	return prom_cp1_size>>20;
+}
+EXPORT_SYMBOL(prom_get_cp1_size);
+
+extern unsigned char ifxmips_ethaddr[6];
+int cmdline_mac = 0;
+
+static int __init
+ifxmips_set_ethaddr(char *str)
+{
+#define IS_HEX(x) \
+	(((x >= '0' && x <= '9') || (x >= 'a' && x <= 'f') \
+		|| (x >= 'A' && x <= 'F')) ? (1) : (0))
+	int i;
+	str = strchr(str, '=');
+	if (!str)
+		goto out;
+	str++;
+	if (strlen(str) != 17)
+		goto out;
+	for (i = 0; i < 6; i++) {
+		if (!IS_HEX(str[3 * i]) || !IS_HEX(str[(3 * i) + 1]))
+			goto out;
+		if ((i != 5) && (str[(3 * i) + 2] != ':'))
+			goto out;
+		ifxmips_ethaddr[i] = simple_strtoul(&str[3 * i], NULL, 16);
+	}
+	if (is_valid_ether_addr(ifxmips_ethaddr))
+		cmdline_mac = 1;
+out:
+	return 1;
+}
+__setup("ethaddr", ifxmips_set_ethaddr);
+
+void __init
+prom_init(void)
+{
+	int argc = fw_arg0;
+	char **argv = (char **) fw_arg1;
+	char **envp = (char **) fw_arg2;
+
+	int memsize = 16; /* assume 16M as default */
+	int i;
+
+	if (argc)
+	{
+		argv = (char **)KSEG1ADDR((unsigned long)argv);
+		arcs_cmdline[0] = '\0';
+		for (i = 1; i < argc; i++)
+		{
+			char *a = (char *)KSEG1ADDR(argv[i]);
+			if (!argv[i])
+				continue;
+			/* for voice cpu on Twinpass/Danube */
+			if (cpu_data[0].cputype == CPU_24K)
+				if (!strncmp(a, "cp1_size=", 9))
+				{
+					prom_cp1_size = memparse(a + 9, &a);
+					continue;
+				}
+			if (strlen(arcs_cmdline) + strlen(a + 1) >= sizeof(arcs_cmdline))
+			{
+				early_printf("cmdline overflow, skipping: %s\n", a);
+				break;
+			}
+			strcat(arcs_cmdline, a);
+			strcat(arcs_cmdline, " ");
+		}
+		if (!*arcs_cmdline)
+			strcpy(&(arcs_cmdline[0]),
+				"console=ttyS0,115200 rootfstype=squashfs,jffs2");
+	}
+	envp = (char **)KSEG1ADDR((unsigned long)envp);
+	while (*envp)
+	{
+		char *e = (char *)KSEG1ADDR(*envp);
+
+		if (!strncmp(e, "memsize=", 8))
+		{
+			e += 8;
+			memsize = simple_strtoul(e, NULL, 10);
+		}
+		envp++;
+	}
+	memsize *= 1024 * 1024;
+
+	/* only on Twinpass/Danube a second CPU is used for Voice */
+	if ((cpu_data[0].cputype == CPU_24K) && (prom_cp1_size))
+	{
+		memsize -= prom_cp1_size;
+		prom_cp1_base = (unsigned int *)KSEG1ADDR(memsize);
+
+		early_printf("Using %dMB Ram and reserving %dMB for cp1\n",
+			memsize>>20, prom_cp1_size>>20);
+	}
+
+	add_memory_region(0x00000000, memsize, BOOT_MEM_RAM);
+}