patch-2.3.99-pre1 linux/arch/arm/kernel/arch.c

• Lines: 323
• Date: Mon Mar 13 13:55:09 2000
• Orig file: v2.3.51/linux/arch/arm/kernel/arch.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.51/linux/arch/arm/kernel/arch.c linux/arch/arm/kernel/arch.c
@@ -0,0 +1,322 @@
+/*
+ * linux/arch/arm/kernel/arch.c
+ *
+ * Architecture specifics
+ */
+#include <linux/config.h>
+#include <linux/tty.h>
+#include <linux/init.h>
+
+#include <asm/elf.h>
+#include <asm/setup.h>
+#include <asm/system.h>
+
+#include "arch.h"
+
+extern unsigned int system_rev;
+extern unsigned int system_serial_low;
+extern unsigned int system_serial_high;
+
+unsigned int vram_size;
+#ifdef CONFIG_ARCH_ACORN
+unsigned int memc_ctrl_reg;
+unsigned int number_mfm_drives;
+#endif
+
+/*
+ * Architecture specific fixups.  This is where any
+ * parameters in the params struct are fixed up, or
+ * any additional architecture specific information
+ * is pulled from the params struct.
+ */
+static void __init
+fixup_acorn(struct machine_desc *desc, struct param_struct *params,
+	    char **cmdline, struct meminfo *mi)
+{
+#ifdef CONFIG_ARCH_ACORN
+	int i;
+
+	if (machine_is_riscpc()) {
+		/*
+		 * RiscPC can't handle half-word loads and stores
+		 */
+		elf_hwcap &= ~HWCAP_HALF;
+
+		switch (params->u1.s.pages_in_vram) {
+		case 512:
+			vram_size += PAGE_SIZE * 256;
+		case 256:
+			vram_size += PAGE_SIZE * 256;
+		default:
+			break;
+		}
+
+		if (vram_size) {
+			desc->video_start = 0x02000000;
+			desc->video_end   = 0x02000000 + vram_size;
+		}
+
+		for (i = 0; i < 4; i++) {
+			mi->bank[i].start = PHYS_OFFSET + (i << 26);
+			mi->bank[i].size  =
+				params->u1.s.pages_in_bank[i] *
+				params->u1.s.page_size;
+		}
+		mi->nr_banks = 4;
+	}
+	memc_ctrl_reg	  = params->u1.s.memc_control_reg;
+	number_mfm_drives = (params->u1.s.adfsdrives >> 3) & 3;
+#endif
+}
+
+static void __init
+fixup_ebsa285(struct machine_desc *desc, struct param_struct *params,
+	      char **cmdline, struct meminfo *mi)
+{
+	ORIG_X		 = params->u1.s.video_x;
+	ORIG_Y		 = params->u1.s.video_y;
+	ORIG_VIDEO_COLS  = params->u1.s.video_num_cols;
+	ORIG_VIDEO_LINES = params->u1.s.video_num_rows;
+}
+
+/*
+ * Older NeTTroms either do not provide a parameters
+ * page, or they don't supply correct information in
+ * the parameter page.
+ */
+static void __init
+fixup_netwinder(struct machine_desc *desc, struct param_struct *params,
+		char **cmdline, struct meminfo *mi)
+{
+	if (params->u1.s.nr_pages != 0x2000 &&
+	    params->u1.s.nr_pages != 0x4000) {
+		printk(KERN_WARNING "Warning: bad NeTTrom parameters "
+		       "detected, using defaults\n");
+
+		params->u1.s.nr_pages = 0x2000;	/* 32MB */
+		params->u1.s.ramdisk_size = 0;
+		params->u1.s.flags = FLAG_READONLY;
+		params->u1.s.initrd_start = 0;
+		params->u1.s.initrd_size = 0;
+		params->u1.s.rd_start = 0;
+	}
+}
+
+/*
+ * CATS uses soft-reboot by default, since
+ * hard reboots fail on early boards.
+ */
+static void __init
+fixup_cats(struct machine_desc *desc, struct param_struct *params,
+	   char **cmdline, struct meminfo *mi)
+{
+	ORIG_VIDEO_LINES  = 25;
+	ORIG_VIDEO_POINTS = 16;
+	ORIG_Y = 24;
+}
+
+static void __init
+fixup_coebsa285(struct machine_desc *desc, struct param_struct *params,
+		char **cmdline, struct meminfo *mi)
+{
+#if 0
+	extern unsigned long boot_memory_end;
+	extern char boot_command_line[];
+
+	mi->nr_banks      = 1;
+	mi->bank[0].start = PHYS_OFFSET;
+	mi->bank[0].size  = boot_memory_end;
+
+	*cmdline = boot_command_line;
+#endif
+}
+
+static void __init
+fixup_sa1100(struct machine_desc *desc, struct param_struct *params,
+	     char **cmdline, struct meminfo *mi)
+{
+#ifdef CONFIG_ARCH_SA1100
+	int i;
+	extern struct mem_desc {
+		unsigned long phys_start;
+		unsigned long length;
+	} mem_desc[];
+	extern unsigned int mem_desc_size;
+
+	for( i = 0; i < mem_desc_size; i++ ) {
+		if( i >= NR_BANKS ) {
+			printk( __FUNCTION__ 
+				": mem_desc too large for meminfo structure\n");
+			break;
+		}
+		mi->bank[i].start = mem_desc[i].phys_start;
+		mi->bank[i].size = mem_desc[i].length;
+	}
+	mi->nr_banks = i;
+
+#if defined(CONFIG_SA1100_BRUTUS)
+	ROOT_DEV = MKDEV(RAMDISK_MAJOR,0);
+	setup_ramdisk( 1, 0, 0, 8192 );
+	setup_initrd( __phys_to_virt(0xd8000000), 0x00400000 );
+#elif defined(CONFIG_SA1100_EMPEG)
+	ROOT_DEV = MKDEV( 3, 1 );  /* /dev/hda1 */
+	setup_ramdisk( 1, 0, 0, 4096 );
+	setup_initrd( 0xd0000000+((1024-320)*1024), (320*1024) );
+#elif defined(CONFIG_SA1100_TIFON)
+	ROOT_DEV = MKDEV(UNNAMED_MAJOR, 0);
+	setup_ramdisk(1, 0, 0, 4096);
+	setup_initrd( 0xd0000000 + 0x1100004, 0x140000 );
+#elif defined(CONFIG_SA1100_VICTOR)
+	ROOT_DEV = MKDEV( 60, 2 );
+
+	/* Get command line parameters passed from the loader (if any) */
+	if( *((char*)0xc0000000) )
+		strcpy( default_command_line, ((char *)0xc0000000) );
+
+	/* power off if any problem */
+	strcat( default_command_line, " panic=1" );
+#elif defined(CONFIG_SA1100_LART)
+	ROOT_DEV = MKDEV(RAMDISK_MAJOR,0);
+	setup_ramdisk(1, 0, 0, 8192);
+	setup_initrd(0xc0400000, 0x00400000);
+#endif
+#endif
+}
+
+#define NO_PARAMS	0
+#define NO_VIDEO	0, 0
+
+/*
+ * This is the list of all architectures supported by
+ * this kernel.  This should be integrated with the list
+ * in head-armv.S.
+ */
+static struct machine_desc machine_desc[] __attribute__ ((__section__ (".arch.info"))) = {
+	{
+		MACH_TYPE_EBSA110,
+		"EBSA110",	/* RMK			*/
+		0x00000400,
+		NO_VIDEO,
+		1, 0, 1, 1, 1,
+		NULL
+	}, {
+		MACH_TYPE_RISCPC,
+		"Acorn-RiscPC",	/* RMK			*/
+		0x10000100,
+		NO_VIDEO,
+		1, 1, 0, 0, 0,
+		fixup_acorn
+	}, {
+		2,
+		"unknown",
+		NO_PARAMS,
+		NO_VIDEO,
+		0, 0, 0, 0, 0,
+		NULL
+	}, {
+		MACH_TYPE_NEXUSPCI,
+		"FTV/PCI",	/* Philip Blundell	*/
+		NO_PARAMS,
+		NO_VIDEO,
+		0, 0, 0, 0, 0,
+		NULL
+	}, {
+		MACH_TYPE_EBSA285,
+		"EBSA285",		/* RMK			*/
+		0x00000100,
+		0x000a0000, 0x000bffff,
+		0, 0, 0, 0, 0,
+		fixup_ebsa285
+	}, {
+		MACH_TYPE_NETWINDER,
+		"Rebel-NetWinder",	/* RMK			*/
+		0x00000100,
+		0x000a0000, 0x000bffff,
+		1, 0, 1, 0, 0,
+		fixup_netwinder
+	}, {
+		MACH_TYPE_CATS,
+		"Chalice-CATS",	/* Philip Blundell	*/
+		NO_PARAMS,
+		0x000a0000, 0x000bffff,
+		0, 0, 0, 0, 1,
+		fixup_cats
+	}, {
+		MACH_TYPE_TBOX,
+		"unknown-TBOX",	/* Philip Blundell	*/
+		NO_PARAMS,
+		NO_VIDEO,
+		0, 0, 0, 0, 0,
+		NULL
+	}, {
+		MACH_TYPE_CO285,
+		"co-EBSA285",	/* Mark van Doesburg	*/
+		NO_PARAMS,
+		NO_VIDEO,
+		0, 0, 0, 0, 0,
+		fixup_coebsa285
+	}, {
+		MACH_TYPE_CLPS7110,
+		"CL-PS7110",	/* Werner Almesberger	*/
+		NO_PARAMS,
+		NO_VIDEO,
+		0, 0, 0, 0, 0,
+		NULL
+	}, {
+		MACH_TYPE_ARCHIMEDES,
+		"Acorn-Archimedes",/* RMK/DAG		*/
+		0x0207c000,
+		NO_VIDEO,
+		0, 0, 0, 0, 0,
+		fixup_acorn
+	}, {
+		MACH_TYPE_A5K,
+		"Acorn-A5000",	/* RMK/PB		*/
+		0x0207c000,
+		NO_VIDEO,
+		0, 0, 0, 0, 0,
+		fixup_acorn
+	}, {
+		MACH_TYPE_ETOILE,
+		"Etoile",		/* Alex de Vries	*/
+		NO_PARAMS,
+		NO_VIDEO,
+		0, 0, 0, 0, 0,
+		NULL
+	}, {
+		MACH_TYPE_LACIE_NAS,
+		"LaCie_NAS",	/* Benjamin Herrenschmidt */
+		NO_PARAMS,
+		NO_VIDEO,
+		0, 0, 0, 0, 0,
+		NULL
+	}, {
+		MACH_TYPE_CLPS7500,
+		"CL-PS7500",	/* Philip Blundell	*/
+		NO_PARAMS,
+		NO_VIDEO,
+		0, 0, 0, 0, 0,
+		NULL
+	}, {
+		MACH_TYPE_SHARK,
+		"Shark",		/* Alexander Schulz	*/
+		NO_PARAMS,
+		0x06000000, 0x06000000+0x001fffff,
+		0, 0, 0, 0, 0,
+		NULL
+	}, {
+		MACH_TYPE_SA1100,
+		"SA1100-based",	/* Nicolas Pitre	*/
+		NO_PARAMS,
+		NO_VIDEO,
+		0, 0, 0, 0, 0,
+		fixup_sa1100
+	}, {
+		MACH_TYPE_PERSONAL_SERVER,
+		"Compaq Personal Server",
+		NO_PARAMS,
+		NO_VIDEO,
+		0, 0, 0, 0, 0,
+		NULL
+	}
+};