patch-1.3.48 linux/arch/mips/kernel/setup.c

• Lines: 369
• Date: Wed Dec 13 12:39:44 1995
• Orig file: v1.3.47/linux/arch/mips/kernel/setup.c
• Orig date: Mon Sep 18 14:53:48 1995

diff -u --recursive --new-file v1.3.47/linux/arch/mips/kernel/setup.c linux/arch/mips/kernel/setup.c
@@ -2,13 +2,16 @@
  *  linux/arch/mips/kernel/setup.c
  *
  *  Copyright (C) 1995  Linus Torvalds
+ *  Copyright (C) 1995  Ralf Baechle
  */
-
+#include <linux/config.h>
+#include <linux/delay.h>
 #include <linux/errno.h>
 #include <linux/sched.h>
 #include <linux/kernel.h>
 #include <linux/mm.h>
 #include <linux/stddef.h>
+#include <linux/string.h>
 #include <linux/unistd.h>
 #include <linux/ptrace.h>
 #include <linux/malloc.h>
@@ -17,11 +20,164 @@
 #include <linux/a.out.h>
 #include <linux/tty.h>
 
+#include <asm/asm.h>
 #include <asm/bootinfo.h>
+#include <asm/vector.h>
 #include <asm/segment.h>
+#include <asm/stackframe.h>
 #include <asm/system.h>
 
 /*
+ * How to handle the machine's features
+ */
+struct feature *feature;
+
+#ifdef CONFIG_ACER_PICA_61
+void acer_pica_61_handle_int(void);
+/*
+ * How to access the floppy controller's ports
+ */
+unsigned char jazz_fd_inb(unsigned int port);
+void jazz_fd_outb(unsigned char value, unsigned int port);
+/*
+ * How to access the floppy DMA functions.
+ */
+void jazz_fd_enable_dma(void);
+void jazz_fd_disable_dma(void);
+int jazz_fd_request_dma(void);
+void jazz_fd_free_dma(void);
+void jazz_fd_clear_dma_ff(void);
+void jazz_fd_set_dma_mode(char mode);
+void jazz_fd_set_dma_addr(unsigned int a);
+void jazz_fd_set_dma_count(unsigned int count);
+int jazz_fd_get_dma_residue(void);
+void jazz_fd_enable_irq(void);
+void jazz_fd_disable_irq(void);
+void jazz_fd_cacheflush(unsigned char *addr, unsigned int size);
+/*
+ * How to access the RTC functions.
+ */
+unsigned char jazz_rtc_read_data(void);
+void jazz_rtc_write_data(unsigned char data);
+
+struct feature acer_pica_61_feature = {
+	acer_pica_61_handle_int,
+	/*
+	 * How to access the floppy controller's ports
+	 */
+	jazz_fd_inb,
+	jazz_fd_outb,
+	/*
+	 * How to access the floppy DMA functions.
+	 */
+	jazz_fd_enable_dma,
+	jazz_fd_disable_dma,
+	jazz_fd_request_dma,
+	jazz_fd_free_dma,
+	jazz_fd_clear_dma_ff,
+	jazz_fd_set_dma_mode,
+	jazz_fd_set_dma_addr,
+	jazz_fd_set_dma_count,
+	jazz_fd_get_dma_residue,
+	jazz_fd_enable_irq,
+	jazz_fd_disable_irq,
+	jazz_fd_cacheflush,
+	/*
+	 * How to access the RTC functions.
+	 */
+	jazz_rtc_read_data,
+	jazz_rtc_write_data
+};
+#endif
+#ifdef CONFIG_DECSTATION
+void decstation_handle_handle_int(void);
+void isa_outb(unsigned char value, unsigned int port);
+unsigned char isa_inb(unsigned int port);
+struct feature decstation_feature = {
+	decstation_handle_handle_int,
+	isa_inb /* Dummy - dunno how to handle this yet */
+	isa_outb, /* Dummy - dunno how to handle this yet */
+};
+#endif
+#ifdef CONFIG_DESKSTATION_RPC44
+void deskstation_rpc44_handle_int(void);
+void isa_outb(unsigned char value, unsigned int port);
+unsigned char isa_inb(unsigned int port);
+struct feature deskstation_rpc44_feature = {
+	deskstation_rpc44_handle_int,
+	isa_inb
+	isa_outb,
+};
+#endif
+#ifdef CONFIG_DESKSTATION_TYNE
+void deskstation_tyne_handle_int(void);
+void isa_outb(unsigned char value, unsigned int port);
+unsigned char isa_inb(unsigned int port);
+struct feature deskstation_tyne_feature = {
+	deskstation_tyne_handle_int,
+	isa_inb,
+	isa_outb,
+};
+#endif
+#ifdef CONFIG_MIPS_MAGNUM_4000
+void mips_magnum_4000_handle_int(void);
+/*
+ * How to access the floppy controller's ports
+ */
+unsigned char jazz_fd_inb(unsigned int port);
+void jazz_fd_outb(unsigned char value, unsigned int port);
+/*
+ * How to access the floppy DMA functions.
+ */
+void jazz_fd_enable_dma(void);
+void jazz_fd_disable_dma(void);
+int jazz_fd_request_dma(void);
+void jazz_fd_free_dma(void);
+void jazz_fd_clear_dma_ff(void);
+void jazz_fd_set_dma_mode(char mode);
+void jazz_fd_set_dma_addr(unsigned int a);
+void jazz_fd_set_dma_count(unsigned int count);
+int jazz_fd_get_dma_residue(void);
+void jazz_fd_enable_irq(void);
+void jazz_fd_disable_irq(void);
+void jazz_fd_cacheflush(unsigned char *addr, unsigned int size);
+/*
+ * How to access the RTC functions.
+ */
+unsigned char jazz_rtc_read_data(void);
+void jazz_rtc_write_data(unsigned char data);
+
+struct feature mips_magnum_4000_feature = {
+	mips_magnum_4000_handle_int,
+	/*
+	 * How to access the floppy controller's ports
+	 */
+	jazz_fd_inb,
+	jazz_fd_outb,
+	/*
+	 * How to access the floppy DMA functions.
+	 */
+	jazz_fd_enable_dma,
+	jazz_fd_disable_dma,
+	jazz_fd_request_dma,
+	jazz_fd_free_dma,
+	jazz_fd_clear_dma_ff,
+	jazz_fd_set_dma_mode,
+	jazz_fd_set_dma_addr,
+	jazz_fd_set_dma_count,
+	jazz_fd_get_dma_residue,
+	jazz_fd_enable_irq,
+	jazz_fd_disable_irq,
+	jazz_fd_cacheflush,
+	/*
+	 * How to access the RTC functions.
+	 */
+	jazz_rtc_read_data,
+	jazz_rtc_write_data
+};
+#endif
+
+/*
  * Tell us the machine setup..
  */
 char wait_available;		/* set if the "wait" instruction available */
@@ -35,12 +191,12 @@
  * Setup options
  */
 struct drive_info_struct drive_info;
-struct screen_info screen_info;
+struct screen_info screen_info = SCREEN_INFO;
 
 unsigned char aux_device_present;
 extern int ramdisk_size;
 extern int root_mountflags;
-extern int end;
+extern int _end;
 
 extern char empty_zero_page[PAGE_SIZE];
 
@@ -54,61 +210,137 @@
  * This is set up by the setup-routine at boot-time
  */
 #define PARAM	empty_zero_page
-#define EXT_MEM (boot_info.memupper)
-#define DRIVE_INFO (boot_info.drive_info)
-#define SCREEN_INFO (screen_info)
-#define MOUNT_ROOT_RDONLY (boot_info.mount_root_rdonly)
-#define RAMDISK_SIZE (boot_info.ramdisk_size)
 #if 0
 #define ORIG_ROOT_DEV (*(unsigned short *) (PARAM+0x1FC))
 #define AUX_DEVICE_INFO (*(unsigned char *) (PARAM+0x1FF))
 #endif
-#define COMMAND_LINE (boot_info.command_line)
 
 static char command_line[CL_SIZE] = { 0, };
 
+#if 0
+/*
+ * Code for easy access to new style bootinfo
+ *
+ * Parameter:  tag      -- taglist entry
+ *
+ * returns  :  (tag *) -- pointer to taglist entry, NULL for not found
+ */
+tag *
+bi_TagFind(enum bi_tag tag)
+{
+	/* TBD */
+	return 0;
+}
+
+/*
+ * Only for taglist creators (bootloaders)
+ *
+ * Parameter:  tag       -- (enum bi_tag) taglist entry
+ *
+ * returns  :  1         -- success
+ *             0         -- failure
+ */
+int
+bi_TagAdd(enum bi_tag tag, unsigned long size, void *tagdata)
+{
+	/* TBD */
+	return 0;
+}
+#endif /* 0 */
+
 void setup_arch(char **cmdline_p,
 	unsigned long * memory_start_p, unsigned long * memory_end_p)
 {
 	unsigned long memory_start, memory_end;
-	char c = ' ', *to = command_line, *from = COMMAND_LINE;
-	int len = 0;
+
+	switch(boot_info.machtype)
+	{
+#ifdef CONFIG_ACER_PICA_61
+	case MACH_ACER_PICA_61:
+		feature = &acer_pica_61_feature;
+		break;
+#endif
+#ifdef CONFIG_DECSTATION
+	case MACH_DECSTATION:
+		feature = &decstation_feature;
+		break;
+#endif
+#ifdef CONFIG_DESKSTATION_RPC
+	case MACH_DESKSTATION_RPC:
+		feature = &deskstation_rpc44_feature;
+		break;
+#endif
+#ifdef CONFIG_DESKSTATION_TYNE
+	case MACH_DESKSTATION_TYNE:
+		feature = &deskstation_tyne_feature;
+		break;
+#endif
+#ifdef CONFIG_MIPS_MAGNUM_4000
+	case MACH_MIPS_MAGNUM_4000:
+		feature = &mips_magnum_4000_feature;
+		break;
+#endif
+	default:
+		panic("Unsupported architecture");
+	}
 
 #if 0
  	ROOT_DEV = to_kdev_t(ORIG_ROOT_DEV);
+#else
+#ifdef CONFIG_BLK_DEV_FD
+	ROOT_DEV = to_kdev_t(0x021c);	/* fd0H1440 */
+#else
+	ROOT_DEV = to_kdev_t(0x0101);	/* ram */ 
 #endif
- 	drive_info = DRIVE_INFO;
- 	screen_info = SCREEN_INFO;
+/*	ROOT_DEV = to_kdev_t(0x00ff); */	/* NFS */
+#endif
+ 	memcpy(&drive_info, &boot_info.drive_info, sizeof(drive_info));
 #if 0
 	aux_device_present = AUX_DEVICE_INFO;
 #endif
-	memory_end = EXT_MEM;
+	memory_end = boot_info.memupper;
 	memory_end &= PAGE_MASK;
-	ramdisk_size = RAMDISK_SIZE;
-	if (MOUNT_ROOT_RDONLY)
+	ramdisk_size = boot_info.ramdisk_size;
+	if (boot_info.mount_root_rdonly)
 		root_mountflags |= MS_RDONLY;
-	memory_start = (unsigned long) &end - KERNELBASE;
 
-	for (;;) {
-		if (c == ' ' && *(unsigned long *)from == *(unsigned long *)"mem=") {
-			memory_end = simple_strtoul(from+4, &from, 0);
-			if ( *from == 'K' || *from == 'k' ) {
-				memory_end = memory_end << 10;
-				from++;
-			} else if ( *from == 'M' || *from == 'm' ) {
-				memory_end = memory_end << 20;
-				from++;
-			}
-		}
-		c = *(from++);
-		if (!c)
-			break;
-		if (CL_SIZE <= ++len)
-			break;
-		*(to++) = c;
-	}
-	*to = '\0';
+	memory_start = (unsigned long) &_end;
+	memory_start += (ramdisk_size << 10);
+
 	*cmdline_p = command_line;
 	*memory_start_p = memory_start;
 	*memory_end_p = memory_end;
+
+#if 0
+	/*
+	 * Check that struct pt_regs is defined properly
+	 * (Should be optimized away, but gcc 2.6.3 is too bad..)
+	 */
+	if (FR_SIZE != sizeof(struct pt_regs) ||
+	    FR_SIZE & 7)
+	{
+		panic("Check_definition_of_struct_pt_regs\n");
+	}
+#endif
+}
+
+#ifdef CONFIG_PROC_FS
+/*
+ * BUFFER is PAGE_SIZE bytes long.
+ */
+int get_cpuinfo(char *buffer)
+{
+	const char *cpu_name[] = CPU_NAMES;
+	const char *mach_name[] = MACH_NAMES;
+
+	return sprintf(buffer,
+		       "cpu\t\t\t: MIPS\n"
+		       "cpu model\t\t: %s\n"
+		       "system type\t\t: %s\n"
+		       "BogoMIPS\t\t: %lu.%02lu\n",
+
+		       cpu_name[boot_info.cputype < CPU_LAST ? boot_info.cputype : CPU_UNKNOWN],
+		       mach_name[boot_info.machtype < CPU_LAST ? boot_info.machtype : CPU_UNKNOWN],
+		       loops_per_sec / 500000, (loops_per_sec / 5000) % 100);
 }
+#endif /* CONFIG_PROC_FS */