X-Git-Url: http://git.openwrt.org/?a=blobdiff_plain;f=target%2Flinux%2Fifxmips%2Ffiles%2Farch%2Fmips%2Fifxmips%2Fprom.c;h=efd472fb0eb314cfc0526de2b68fa0b3c806df1f;hb=a668d3bec510e3c1311a08502c582b797c11b589;hp=880febc62bc49a8edb0efe3a64f97d2f6f69b7c3;hpb=81dea43759c54dafd4f8905d469f3bf53081bcec;p=openwrt%2Fsvn-archive%2Farchive.git

diff --git a/target/linux/ifxmips/files/arch/mips/ifxmips/prom.c b/target/linux/ifxmips/files/arch/mips/ifxmips/prom.c
index 880febc62b..efd472fb0e 100644
--- a/target/linux/ifxmips/files/arch/mips/ifxmips/prom.c
+++ b/target/linux/ifxmips/files/arch/mips/ifxmips/prom.c
@@ -14,7 +14,7 @@
  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  *
  *   Copyright (C) 2005 Wu Qi Ming infineon
- *   Copyright (C) 2007 John Crispin <blogic@openwrt.org> 
+ *   Copyright (C) 2007 John Crispin <blogic@openwrt.org>
  */
 
 #include <linux/init.h>
@@ -23,49 +23,50 @@
 #include <asm/bootinfo.h>
 #include <asm/ifxmips/ifxmips.h>
 
-static char buf[1024];
-unsigned int *prom_cp1_base = NULL;
-unsigned int prom_cp1_size = 0;
+static char buf[1024]; /* for prom_printf() */
 
-#ifdef IFXMIPS_PROM_ASC0
+/* for voice cpu (MIPS24K) */
+unsigned int *prom_cp1_base;
+unsigned int prom_cp1_size;
+
+/* for Multithreading (APRP) on MIPS34K */
+unsigned long physical_memsize;
+
+#ifdef CONFIG_IFXMIPS_PROM_ASC0
 #define IFXMIPS_ASC_DIFF	0
 #else
 #define IFXMIPS_ASC_DIFF	IFXMIPS_ASC_BASE_DIFF
 #endif
 
-static inline u32
-asc_r32(unsigned long r)
+static inline u32 asc_r32(unsigned long r)
 {
-	return ifxmips_r32((u32*)(IFXMIPS_ASC_BASE_ADDR + IFXMIPS_ASC_DIFF + r));
+	return ifxmips_r32((u32 *)(IFXMIPS_ASC_BASE_ADDR + IFXMIPS_ASC_DIFF + r));
 }
 
-static inline void
-asc_w32(u32 v, unsigned long r)
+static inline void asc_w32(u32 v, unsigned long r)
 {
-	ifxmips_w32(v, (u32*)(IFXMIPS_ASC_BASE_ADDR + IFXMIPS_ASC_DIFF + r));
+	ifxmips_w32(v, (u32 *)(IFXMIPS_ASC_BASE_ADDR + IFXMIPS_ASC_DIFF + r));
 }
 
-void
-prom_free_prom_memory(void)
+void prom_free_prom_memory(void)
 {
 }
 
-void
-prom_putchar(char c)
+void prom_putchar(char c)
 {
 	unsigned long flags;
 
 	local_irq_save(flags);
-	while((asc_r32(IFXMIPS_ASC_FSTAT) & ASCFSTAT_TXFFLMASK) >> ASCFSTAT_TXFFLOFF);
+	while ((asc_r32(IFXMIPS_ASC_FSTAT) & ASCFSTAT_TXFFLMASK) >> ASCFSTAT_TXFFLOFF)
+		;
 
-	if(c == '\n')
+	if (c == '\n')
 		asc_w32('\r', IFXMIPS_ASC_TBUF);
 	asc_w32(c, IFXMIPS_ASC_TBUF);
 	local_irq_restore(flags);
 }
 
-void
-prom_printf(const char * fmt, ...)
+void prom_printf(const char *fmt, ...)
 {
 	va_list args;
 	int l;
@@ -76,7 +77,7 @@ prom_printf(const char * fmt, ...)
 	va_end(args);
 	buf_end = buf + l;
 
-	for(p = buf; p < buf_end; p++)
+	for (p = buf; p < buf_end; p++)
 		prom_putchar(*p);
 }
 
@@ -88,58 +89,66 @@ EXPORT_SYMBOL(prom_get_cp1_base);
 
 unsigned int prom_get_cp1_size(void)
 {
-	return prom_cp1_size;
+	/* return size im MB */
+	return prom_cp1_size>>20;
 }
 EXPORT_SYMBOL(prom_get_cp1_size);
 
-void __init
-prom_init(void)
+void __init prom_init(void)
 {
 	int argc = fw_arg0;
 	char **argv = (char **) fw_arg1;
 	char **envp = (char **) fw_arg2;
 
-	int memsize = 16;
+	int memsize = 16; /* assume 16M as default */
 	int i;
 
 	mips_machtype = MACH_INFINEON_IFXMIPS;
 
-	argv = (char**)KSEG1ADDR((unsigned long)argv);
-	arcs_cmdline[0] = '\0';
-	for(i = 1; i < argc; i++)
-	{
-		char *a = (char*)KSEG1ADDR(argv[i]);
-		if(!a)
-			continue;
-		if(strlen(arcs_cmdline) + strlen(a + 1) >= sizeof(arcs_cmdline))
-			break;
-		strcat(arcs_cmdline, a);
-		strcat(arcs_cmdline, " ");
+	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)) {
+				prom_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);
 
-	envp = (char**)KSEG1ADDR((unsigned long)envp);
-	while(*envp)
-	{
-		char *e = (char*)KSEG1ADDR(*envp);
-
-		if(!strncmp(e, "memsize=", 8))
-		{
+		if (!strncmp(e, "memsize=", 8)) {
 			e += 8;
 			memsize = simple_strtoul(e, NULL, 10);
 		}
 		envp++;
 	}
-
-	prom_cp1_size = 2;
-	memsize -= prom_cp1_size;
-	prom_cp1_base = (unsigned int*)(0xA0000000 + (memsize * 1024 * 1024));
-
-	prom_printf("Using %dMB Ram and reserving %dMB for cp1\n", memsize, prom_cp1_size);
 	memsize *= 1024 * 1024;
 
-	if(!*arcs_cmdline)
-		strcpy(&(arcs_cmdline[0]),
-			"console=ttyS0,115200 rootfstype=squashfs,jffs2 init=/etc/preinit");
+	/* 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);
+
+		prom_printf("Using %dMB Ram and reserving %dMB for cp1\n",
+			memsize>>20, prom_cp1_size>>20);
+	}
 
 	add_memory_region(0x00000000, memsize, BOOT_MEM_RAM);
 }