These can come back when someone wants to support them

src/firmware/linuxbios/linuxbios.c

@@ -1,386 +0,0 @@
-#ifdef LINUXBIOS
-
-#include "etherboot.h"
-#include "dev.h"
-#include "linuxbios_tables.h"
-
-struct meminfo meminfo;
-static int lb_failsafe = 1;
-static unsigned lb_boot[MAX_BOOT_ENTRIES];
-static unsigned lb_boot_index;
-static struct cmos_entries lb_countdown;
-static struct cmos_checksum lb_checksum;
-
-#undef DEBUG_LINUXBIOS
-
-static void set_base_mem_k(struct meminfo *info, unsigned mem_k)
-{
-	if ((mem_k <= 640) && (info->basememsize <= mem_k)) {
-		info->basememsize = mem_k;
-	}
-}
-static void set_high_mem_k(struct meminfo *info, unsigned mem_k)
-{
-	/* Shave off a megabyte before playing */
-	if (mem_k < 1024) {
-		return;
-	}
-	mem_k -= 1024;
-	if (info->memsize <= mem_k) {
-		info->memsize = mem_k;
-	}
-}
-
-#define for_each_lbrec(head, rec) \
-	for(rec = (struct lb_record *)(((char *)head) + sizeof(*head)); \
-		(((char *)rec) < (((char *)head) + sizeof(*head) + head->table_bytes))  && \
-		(rec->size >= 1) && \
-		((((char *)rec) + rec->size) <= (((char *)head) + sizeof(*head) + head->table_bytes)); \
-		rec = (struct lb_record *)(((char *)rec) + rec->size)) 
-		
-
-#define for_each_crec(tbl, rec) \
-	for(rec = (struct lb_record *)(((char *)tbl) + tbl->header_length); \
-		(((char *)rec) < (((char *)tbl) + tbl->size))  && \
-		(rec->size >= 1) && \
-		((((char *)rec) + rec->size) <= (((char *)tbl) + tbl->size)); \
-		rec = (struct lb_record *)(((char *)rec) + rec->size)) 
-		
-
-
-static void read_lb_memory(
-	struct meminfo *info, struct lb_memory *mem)
-{
-	int i;
-	int entries;
-	entries = (mem->size - sizeof(*mem))/sizeof(mem->map[0]);
-	for(i = 0; (i < entries); i++) {
-		if (info->map_count < E820MAX) {
-			info->map[info->map_count].addr = mem->map[i].start;
-			info->map[info->map_count].size = mem->map[i].size;
-			info->map[info->map_count].type = mem->map[i].type;
-			info->map_count++;
-		}
-		switch(mem->map[i].type) {
-		case LB_MEM_RAM:
-		{
-			unsigned long long end;
-			unsigned long mem_k;
-			end = mem->map[i].start + mem->map[i].size;
-#if defined(DEBUG_LINUXBIOS)
-			printf("lb: %X%X - %X%X (ram)\n",
-				(unsigned long)(mem->map[i].start >>32), 
-				(unsigned long)(mem->map[i].start & 0xFFFFFFFF), 
-				(unsigned long)(end >> 32), 
-				(unsigned long)(end & 0xFFFFFFFF));
-#endif /* DEBUG_LINUXBIOS */
-			end >>= 10;
-			mem_k = end;
-			if (end & 0xFFFFFFFF00000000ULL) {
-				mem_k = 0xFFFFFFFF;
-			}
-			set_base_mem_k(info, mem_k);
-			set_high_mem_k(info, mem_k);
-			break;
-		}
-		case LB_MEM_RESERVED:
-		default:
-#if defined(DEBUG_LINUXBIOS)
-		{
-			unsigned long long end;
-			end = mem->map[i].start + mem->map[i].size;
-			printf("lb: %X%X - %X%X (reserved)\n",
-				(unsigned long)(mem->map[i].start >>32), 
-				(unsigned long)(mem->map[i].start & 0xFFFFFFFF), 
-				(unsigned long)(end >> 32), 
-				(unsigned long)(end & 0xFFFFFFFF));
-		}
-#endif /* DEBUG_LINUXBIOS */
-			break;
-		}
-	}
-}
-
-static unsigned cmos_read(unsigned offset, unsigned int size)
-{
-	unsigned addr, old_addr;
-	unsigned value;
-	
-	addr = offset/8;
-
-	old_addr = inb(0x70);
-	outb(addr | (old_addr &0x80), 0x70);
-	value = inb(0x71);
-	outb(old_addr, 0x70);
-
-	value >>= offset & 0x7;
-	value &= ((1 << size) - 1);
-	
-	return value;
-}
-
-static unsigned cmos_read_checksum(void)
-{
-	unsigned sum = 
-		(cmos_read(lb_checksum.location, 8) << 8) |
-		cmos_read(lb_checksum.location +8, 8);
-	return sum & 0xffff;
-}
-
-static int cmos_valid(void)
-{
-	unsigned i;
-	unsigned sum, old_sum;
-	sum = 0;
-	if ((lb_checksum.tag != LB_TAG_OPTION_CHECKSUM) || 
-		(lb_checksum.type != CHECKSUM_PCBIOS) ||
-		(lb_checksum.size != sizeof(lb_checksum))) {
-		return 0;
-	}
-	for(i = lb_checksum.range_start; i <= lb_checksum.range_end; i+= 8) {
-		sum += cmos_read(i, 8);
-	}
-	sum = (~sum)&0x0ffff;
-	old_sum = cmos_read_checksum();
-	return sum == old_sum;
-}
-
-static void cmos_write(unsigned offset, unsigned int size, unsigned setting)
-{
-	unsigned addr, old_addr;
-	unsigned value, mask, shift;
-	unsigned sum;
-	
-	addr = offset/8;
-	
-	shift = offset & 0x7;
-	mask = ((1 << size) - 1) << shift;
-	setting = (setting << shift) & mask;
-
-	old_addr = inb(0x70);
-	sum = cmos_read_checksum();
-	sum = (~sum) & 0xffff;
-
-	outb(addr | (old_addr &0x80), 0x70);
-	value = inb(0x71);
-	sum -= value;
-	value &= ~mask;
-	value |= setting;
-	sum += value;
-	outb(value, 0x71);
-
-	sum = (~sum) & 0x0ffff;
-	outb((lb_checksum.location/8) | (old_addr & 0x80), 0x70);
-	outb((sum >> 8) & 0xff, 0x71);
-	outb(((lb_checksum.location +8)/8) | (old_addr & 0x80), 0x70);
-	outb(sum & 0xff, 0x71);
-
-	outb(old_addr, 0x70);
-
-	return;
-}
-
-static void read_linuxbios_values(struct meminfo *info,
-	struct lb_header *head)
-{
-	/* Read linuxbios tables... */
-	struct lb_record *rec;
-	memset(lb_boot, 0, sizeof(lb_boot));
-	for_each_lbrec(head, rec) {
-		switch(rec->tag) {
-		case LB_TAG_MEMORY:
-		{
-			struct lb_memory *mem;
-			mem = (struct lb_memory *) rec;
-			read_lb_memory(info, mem); 
-			break;
-		}
-		case LB_TAG_CMOS_OPTION_TABLE:
-		{
-			struct cmos_option_table *tbl;
-			struct lb_record *crec;
-			struct cmos_entries *entry;
-			tbl = (struct cmos_option_table *)rec;
-			for_each_crec(tbl, crec) {
-				/* Pick off the checksum entry and keep it */
-				if (crec->tag == LB_TAG_OPTION_CHECKSUM) {
-					memcpy(&lb_checksum, crec, sizeof(lb_checksum));
-					continue;
-				}
-				if (crec->tag != LB_TAG_OPTION)
-					continue;
-				entry = (struct cmos_entries *)crec;
-				if ((entry->bit < 112) || (entry->bit > 1020))
-					continue;
-				/* See if LinuxBIOS came up in fallback or normal mode */
-				if (memcmp(entry->name, "last_boot", 10) == 0) {
-					lb_failsafe = cmos_read(entry->bit, entry->length) == 0;
-					continue;
-				}
-				/* Find where the boot countdown is */
-				if (memcmp(entry->name, "boot_countdown", 15) == 0) {
-					lb_countdown =  *entry;
-					continue;
-				}
-				/* Find the default boot index */
-				if (memcmp(entry->name, "boot_index", 11) == 0) {
-					lb_boot_index = cmos_read(entry->bit, entry->length);
-					continue;
-				}
-				/* Now filter for the boot order options */
-				if (entry->length != 4)
-					continue;
-				if (entry->config != 'e')
-					continue;
-				if (memcmp(entry->name, "boot_first", 11) == 0) {
-					lb_boot[0] = cmos_read(entry->bit, entry->length);
-				}
-				else if (memcmp(entry->name, "boot_second", 12) == 0) {
-					lb_boot[1] = cmos_read(entry->bit, entry->length);
-				}
-				else if (memcmp(entry->name, "boot_third", 11) == 0) {
-					lb_boot[2] = cmos_read(entry->bit, entry->length);
-				}
-			}
-			break;
-		}
-		default: 
-			break;
-		};
-	}
-}
-
-
-
-static unsigned long count_lb_records(void *start, unsigned long length)
-{
-	struct lb_record *rec;
-	void *end;
-	unsigned long count;
-	count = 0;
-	end = ((char *)start) + length;
-	for(rec = start; ((void *)rec < end) &&
-		((signed long)rec->size <= (end - (void *)rec)); 
-		rec = (void *)(((char *)rec) + rec->size)) {
-		count++;
-	}
-	return count;
-}
-
-static int find_lb_table(void *start, void *end, struct lb_header **result)
-{
-	unsigned char *ptr;
-
-	/* For now be stupid.... */
-	for(ptr = start; virt_to_phys(ptr) < virt_to_phys(end); ptr += 16) {
-		struct lb_header *head = (struct lb_header *)ptr;
-		if (	(head->signature[0] != 'L') || 
-			(head->signature[1] != 'B') ||
-			(head->signature[2] != 'I') ||
-			(head->signature[3] != 'O')) {
-			continue;
-		}
-		if (head->header_bytes != sizeof(*head))
-			continue;
-#if defined(DEBUG_LINUXBIOS)
-		printf("Found canidate at: %X\n", virt_to_phys(head));
-#endif
-		if (ipchksum((uint16_t *)head, sizeof(*head)) != 0) 
-			continue;
-#if defined(DEBUG_LINUXBIOS)
-		printf("header checksum o.k.\n");
-#endif
-		if (ipchksum((uint16_t *)(ptr + sizeof(*head)), head->table_bytes) !=
-			head->table_checksum) {
-			continue;
-		}
-#if defined(DEBUG_LINUXBIOS)
-		printf("table checksum o.k.\n");
-#endif
-		if (count_lb_records(ptr + sizeof(*head), head->table_bytes) !=
-			head->table_entries) {
-			continue;
-		}
-#if defined(DEBUG_LINUXBIOS)
-		printf("record count o.k.\n");
-#endif
-		*result = head;
-		return 1;
-	};
-	return 0;
-}
-
-void get_memsizes(void)
-{
-	struct lb_header *lb_table;
-	int found;
-#if defined(DEBUG_LINUXBIOS)
-	printf("\nSearching for linuxbios tables...\n");
-#endif /* DEBUG_LINUXBIOS */
-	found = 0;
-	meminfo.basememsize = 0;
-	meminfo.memsize = 0;
-	meminfo.map_count = 0;
-	/* This code is specific to linuxBIOS but could
-	 * concievably be extended to work under a normal bios.
-	 * but size is important...
-	 */
-	if (!found) {
-		found = find_lb_table(phys_to_virt(0x00000), phys_to_virt(0x01000), &lb_table);
-	}
-	if (!found) {
-		found = find_lb_table(phys_to_virt(0xf0000), phys_to_virt(0x100000), &lb_table);
-	}
-	if (found) {
-#if defined (DEBUG_LINUXBIOS)
-		printf("Found LinuxBIOS table at: %X\n", virt_to_phys(lb_table));
-#endif
-		read_linuxbios_values(&meminfo, lb_table);
-	}
-
-#if defined(DEBUG_LINUXBIOS)
-	printf("base_mem_k = %d high_mem_k = %d\n", 
-		meminfo.basememsize, meminfo.memsize);
-#endif /* DEBUG_LINUXBIOS */
-	
-}
-
-unsigned long get_boot_order(unsigned long order, unsigned *index)
-{
-	static int again;
-	static int checksum_valid;
-	static unsigned boot_count;
-	int i;
-
-	if (!lb_failsafe && !again) {
-		/* Decrement the boot countdown the first time through */
-		checksum_valid = cmos_valid();
-		boot_count = cmos_read(lb_countdown.bit, lb_countdown.length);
-		if (boot_count > 0) {
-			cmos_write(lb_countdown.bit, lb_countdown.length, boot_count -1);
-		}
-		again = 1;
-	}
-	if (lb_failsafe || !checksum_valid) {
-		/* When LinuxBIOS is in failsafe mode, or there is an
-		 * invalid cmos checksum ignore all cmos options 
-		 */
-		return order;
-	}
-	for(i = 0; i < MAX_BOOT_ENTRIES; i++) {
-		unsigned long boot;
-		boot = order >> (i*BOOT_BITS) & BOOT_MASK;
-		boot = lb_boot[i] & BOOT_TYPE_MASK;
-		if (boot >= BOOT_NOTHING) {
-			boot = BOOT_NOTHING;
-		}
-		if (boot_count == 0) {
-			boot |= BOOT_FAILSAFE;
-		}
-		order &= ~(BOOT_MASK << (i * BOOT_BITS));
-		order |= (boot << (i*BOOT_BITS));
-	}
-	*index = lb_boot_index;
-	return order;
-}
-#endif /* LINUXBIOS */

src/firmware/linuxbios/linuxbios_tables.h

@@ -1,183 +0,0 @@
-#ifndef LINUXBIOS_TABLES_H
-#define LINUXBIOS_TABLES_H
-
-#include "stdint.h"
-
-/* The linuxbios table information is for conveying information
- * from the firmware to the loaded OS image.  Primarily this
- * is expected to be information that cannot be discovered by
- * other means, such as quering the hardware directly.
- *
- * All of the information should be Position Independent Data.  
- * That is it should be safe to relocated any of the information
- * without it's meaning/correctnes changing.   For table that
- * can reasonably be used on multiple architectures the data
- * size should be fixed.  This should ease the transition between
- * 32 bit and 64 bit architectures etc.
- *
- * The completeness test for the information in this table is:
- * - Can all of the hardware be detected?
- * - Are the per motherboard constants available?
- * - Is there enough to allow a kernel to run that was written before
- *   a particular motherboard is constructed? (Assuming the kernel
- *   has drivers for all of the hardware but it does not have
- *   assumptions on how the hardware is connected together).
- *
- * With this test it should be straight forward to determine if a
- * table entry is required or not.  This should remove much of the
- * long term compatibility burden as table entries which are
- * irrelevant or have been replaced by better alternatives may be
- * dropped.  Of course it is polite and expidite to include extra
- * table entries and be backwards compatible, but it is not required.
- */
-
-
-struct lb_header
-{
-	uint8_t  signature[4]; /* LBIO */
-	uint32_t header_bytes;
-	uint32_t header_checksum;
-	uint32_t table_bytes;
-	uint32_t table_checksum;
-	uint32_t table_entries;
-};
-
-/* Every entry in the boot enviroment list will correspond to a boot
- * info record.  Encoding both type and size.  The type is obviously
- * so you can tell what it is.  The size allows you to skip that
- * boot enviroment record if you don't know what it easy.  This allows
- * forward compatibility with records not yet defined.
- */
-struct lb_record {
-	uint32_t tag;		/* tag ID */
-	uint32_t size;		/* size of record (in bytes) */
-};
-
-#define LB_TAG_UNUSED	0x0000
-
-#define LB_TAG_MEMORY	0x0001
-
-struct lb_memory_range {
-	uint64_t start;
-	uint64_t size;
-	uint32_t type;
-#define LB_MEM_RAM       1	/* Memory anyone can use */
-#define LB_MEM_RESERVED  2	/* Don't use this memory region */
-#define LB_MEM_TABLE     16	/* Ram configuration tables are kept in */
-	
-};
-
-struct lb_memory {
-	uint32_t tag;
-	uint32_t size;
-	struct lb_memory_range map[0];
-};
-
-#define LB_TAG_HWRPB	0x0002
-struct lb_hwrpb {
-	uint32_t tag;
-	uint32_t size;
-	uint64_t hwrpb;
-};
-
-#define LB_TAG_MAINBOARD	0x0003
-struct lb_mainboard {
-	uint32_t tag;
-	uint32_t size;
-	uint8_t  vendor_idx;
-	uint8_t  part_number_idx;
-	uint8_t  strings[0];
-};
-
-#define LB_TAG_VERSION		0x0004
-#define LB_TAG_EXTRA_VERSION	0x0005
-#define LB_TAG_BUILD		0x0006
-#define LB_TAG_COMPILE_TIME	0x0007
-#define LB_TAG_COMPILE_BY	0x0008
-#define LB_TAG_COMPILE_HOST	0x0009
-#define LB_TAG_COMPILE_DOMAIN	0x000a
-#define LB_TAG_COMPILER		0x000b
-#define LB_TAG_LINKER		0x000c
-#define LB_TAG_ASSEMBLER	0x000d
-struct lb_string {
-	uint32_t tag;
-	uint32_t size;
-	uint8_t  string[0];
-};
-
-/* The following structures are for the cmos definitions table */
-#define LB_TAG_CMOS_OPTION_TABLE 200
-/* cmos header record */
-struct cmos_option_table {
-	uint32_t tag;               /* CMOS definitions table type */
-	uint32_t size;               /* size of the entire table */
-	uint32_t header_length;      /* length of header */
-};
-
-/* cmos entry record
-        This record is variable length.  The name field may be
-        shorter than CMOS_MAX_NAME_LENGTH. The entry may start
-        anywhere in the byte, but can not span bytes unless it
-        starts at the beginning of the byte and the length is
-        fills complete bytes.
-*/
-#define LB_TAG_OPTION 201
-struct cmos_entries {
-	uint32_t tag;                /* entry type */
-	uint32_t size;               /* length of this record */
-	uint32_t bit;                /* starting bit from start of image */
-	uint32_t length;             /* length of field in bits */
-	uint32_t config;             /* e=enumeration, h=hex, r=reserved */
-	uint32_t config_id;          /* a number linking to an enumeration record */
-#define CMOS_MAX_NAME_LENGTH 32
-	uint8_t name[CMOS_MAX_NAME_LENGTH]; /* name of entry in ascii, 
-					       variable length int aligned */
-};
-
-
-/* cmos enumerations record
-        This record is variable length.  The text field may be
-        shorter than CMOS_MAX_TEXT_LENGTH.
-*/
-#define LB_TAG_OPTION_ENUM 202
-struct cmos_enums {
-	uint32_t tag;		     /* enumeration type */
-	uint32_t size; 		     /* length of this record */
-	uint32_t config_id;          /* a number identifying the config id */
-	uint32_t value;              /* the value associated with the text */
-#define CMOS_MAX_TEXT_LENGTH 32
-	uint8_t text[CMOS_MAX_TEXT_LENGTH]; /* enum description in ascii, 
-						variable length int aligned */
-};
-
-/* cmos defaults record
-        This record contains default settings for the cmos ram.
-*/
-#define LB_TAG_OPTION_DEFAULTS 203
-struct cmos_defaults {
-	uint32_t tag;                /* default type */
-	uint32_t size;               /* length of this record */
-	uint32_t name_length;        /* length of the following name field */
-	uint8_t name[CMOS_MAX_NAME_LENGTH]; /* name identifying the default */
-#define CMOS_IMAGE_BUFFER_SIZE 128
-	uint8_t default_set[CMOS_IMAGE_BUFFER_SIZE]; /* default settings */
-};
-
-#define LB_TAG_OPTION_CHECKSUM 204
-struct	cmos_checksum {
-	uint32_t tag;
-	uint32_t size;
-	/* In practice everything is byte aligned, but things are measured
-	 * in bits to be consistent.
-	 */
-	uint32_t range_start;	/* First bit that is checksummed (byte aligned) */
-	uint32_t range_end;	/* Last bit that is checksummed (byte aligned) */
-	uint32_t location;	/* First bit of the checksum (byte aligned) */
-	uint32_t type;		/* Checksum algorithm that is used */
-#define CHECKSUM_NONE	0
-#define CHECKSUM_PCBIOS	1
-};
-
-
-
-#endif /* LINUXBIOS_TABLES_H */