Add qemu 2.4.0

Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>

1 files changed, 623 insertions, 0 deletions

diff --git a/qemu/roms/SLOF/lib/libnvram/nvram.c b/qemu/roms/SLOF/lib/libnvram/nvram.c
new file mode 100644
index 000000000..5c1137669
--- /dev/null
+++ b/qemu/roms/SLOF/lib/libnvram/nvram.c
@@ -0,0 +1,623 @@
+/******************************************************************************
+ * Copyright (c) 2004, 2008 IBM Corporation
+ * All rights reserved.
+ * This program and the accompanying materials
+ * are made available under the terms of the BSD License
+ * which accompanies this distribution, and is available at
+ * http://www.opensource.org/licenses/bsd-license.php
+ *
+ * Contributors:
+ *     IBM Corporation - initial implementation
+ *****************************************************************************/
+
+#include "cache.h"
+#include "nvram.h"
+#include "../libhvcall/libhvcall.h"
+
+#include <stdio.h>
+#include <stdarg.h>
+#include <string.h>
+#include <southbridge.h>
+#include <nvramlog.h>
+#include <byteorder.h>
+
+#ifdef RTAS_NVRAM
+static uint32_t fetch_token;
+static uint32_t store_token;
+static uint32_t NVRAM_LENGTH;
+static char *nvram_buffer; /* use buffer allocated by SLOF code */
+#else
+#ifndef NVRAM_LENGTH
+#define NVRAM_LENGTH	0x10000
+#endif
+/*
+ * This is extremely ugly, but still better than implementing 
+ * another sbrk() around it.
+ */
+static char nvram_buffer[NVRAM_LENGTH];
+#endif
+
+static uint8_t nvram_buffer_locked=0x00;
+
+void nvram_init(uint32_t _fetch_token, uint32_t _store_token, 
+		long _nvram_length, void* nvram_addr)
+{
+#ifdef RTAS_NVRAM
+	fetch_token = _fetch_token;
+	store_token = _store_token;
+	NVRAM_LENGTH = _nvram_length;
+	nvram_buffer = nvram_addr;
+
+	DEBUG("\nNVRAM: size=%d, fetch=%x, store=%x\n",
+		NVRAM_LENGTH, fetch_token, store_token);
+#endif
+}
+
+
+void asm_cout(long Character,long UART,long NVRAM);
+
+#if defined(DISABLE_NVRAM)
+
+static volatile uint8_t nvram[NVRAM_LENGTH]; /* FAKE */
+
+#define nvram_access(type,size,name) 				\
+	type nvram_read_##name(unsigned int offset)		\
+	{							\
+		type *pos;					\
+		if (offset > (NVRAM_LENGTH - sizeof(type)))	\
+			return 0;				\
+		pos = (type *)(nvram+offset);			\
+		return *pos;					\
+	}							\
+	void nvram_write_##name(unsigned int offset, type data)	\
+	{							\
+		type *pos;					\
+		if (offset > (NVRAM_LENGTH - sizeof(type)))	\
+			return;					\
+		pos = (type *)(nvram+offset);			\
+		*pos = data;					\
+	}
+
+#elif defined(RTAS_NVRAM)
+
+static inline void nvram_fetch(unsigned int offset, void *buf, unsigned int len)
+{
+ 	struct hv_rtas_call rtas = {
+		.token = fetch_token,
+		.nargs = 3,
+		.nrets = 2,
+		.argret = { offset, (uint32_t)(unsigned long)buf, len },
+	};
+	h_rtas(&rtas);
+}
+
+static inline void nvram_store(unsigned int offset, void *buf, unsigned int len)
+{
+	struct hv_rtas_call rtas = {
+		.token = store_token,
+		.nargs = 3,
+		.nrets = 2,
+		.argret = { offset, (uint32_t)(unsigned long)buf, len },
+	};
+	h_rtas(&rtas);
+}
+
+#define nvram_access(type,size,name) 				\
+	type nvram_read_##name(unsigned int offset)		\
+	{							\
+		type val;					\
+		if (offset > (NVRAM_LENGTH - sizeof(type)))	\
+			return 0;				\
+		nvram_fetch(offset, &val, size / 8);		\
+		return val;					\
+	}							\
+	void nvram_write_##name(unsigned int offset, type data)	\
+	{							\
+		if (offset > (NVRAM_LENGTH - sizeof(type)))	\
+			return;					\
+		nvram_store(offset, &data, size / 8);		\
+	}
+
+#else	/* DISABLE_NVRAM */
+
+static volatile uint8_t *nvram = (volatile uint8_t *)SB_NVRAM_adr;
+
+#define nvram_access(type,size,name) 				\
+	type nvram_read_##name(unsigned int offset)		\
+	{							\
+		type *pos;					\
+		if (offset > (NVRAM_LENGTH - sizeof(type)))	\
+			return 0;				\
+		pos = (type *)(nvram+offset);			\
+		return ci_read_##size(pos);			\
+	}							\
+	void nvram_write_##name(unsigned int offset, type data)	\
+	{							\
+		type *pos;					\
+		if (offset > (NVRAM_LENGTH - sizeof(type)))	\
+			return;					\
+		pos = (type *)(nvram+offset);			\
+		ci_write_##size(pos, data);			\
+	}
+
+#endif
+
+/*
+ * producer for nvram access functions. Since these functions are
+ * basically all the same except for the used data types, produce 
+ * them via the nvram_access macro to keep the code from bloating.
+ */
+
+nvram_access(uint8_t,   8, byte)
+nvram_access(uint16_t, 16, word)
+nvram_access(uint32_t, 32, dword)
+nvram_access(uint64_t, 64, qword)
+
+
+
+/**
+ * This function is a minimal abstraction for our temporary
+ * buffer. It should have been malloced, but since there is no
+ * usable malloc, we go this route.
+ *
+ * @return pointer to temporary buffer
+ */
+
+char *get_nvram_buffer(int len)
+{
+	if(len>NVRAM_LENGTH)
+		return NULL;
+
+	if(nvram_buffer_locked)
+		return NULL;
+
+	nvram_buffer_locked = 0xff;
+
+	return nvram_buffer;
+}
+
+/**
+ * @param buffer pointer to the allocated buffer. This
+ * is unused, but nice in case we ever get a real malloc
+ */
+
+void free_nvram_buffer(char *buffer __attribute__((unused)))
+{
+	nvram_buffer_locked = 0x00;
+}
+
+/**
+ * @param fmt format string, like in printf
+ * @param ... variable number of arguments
+ */
+
+int nvramlog_printf(const char* fmt, ...)
+{
+	char buff[256];
+	int count, i;
+	va_list ap;
+
+	va_start(ap, fmt);
+	count = vsprintf(buff, fmt, ap);
+	va_end(ap);
+
+	for (i=0; i<count; i++)
+		asm_cout(buff[i], 0, 1);
+
+	return count;
+}
+
+/**
+ * @param offset start offset of the partition header
+ */
+
+static uint8_t get_partition_type(int offset)
+{
+	return nvram_read_byte(offset);
+}
+
+/**
+ * @param offset start offset of the partition header
+ */
+
+static uint8_t get_partition_header_checksum(int offset)
+{
+	return nvram_read_byte(offset+1);
+}
+
+/**
+ * @param offset start offset of the partition header
+ */
+
+static uint16_t get_partition_len(int offset)
+{
+	return nvram_read_word(offset+2);
+}
+
+/**
+ * @param offset start offset of the partition header
+ * @return static char array containing the partition name
+ *
+ * NOTE: If the partition name needs to be non-temporary, strdup 
+ * and use the copy instead.
+ */
+
+static char * get_partition_name(int offset)
+{
+	static char name[12];
+	int i;
+	for (i=0; i<12; i++)
+		name[i]=nvram_read_byte(offset+4+i);
+
+	DEBUG("name: \"%s\"\n", name);
+	return name;
+}
+
+static uint8_t calc_partition_header_checksum(int offset)
+{
+	uint16_t plainsum;
+	uint8_t checksum;
+	int i;
+
+	plainsum = nvram_read_byte(offset);
+
+	for (i=2; i<PARTITION_HEADER_SIZE; i++)
+		plainsum+=nvram_read_byte(offset+i);
+
+	checksum=(plainsum>>8)+(plainsum&0xff);
+
+	return checksum;
+}
+
+static int calc_used_nvram_space(void)
+{
+	int walk, len;
+
+	for (walk=0; walk<NVRAM_LENGTH;) {
+		if(nvram_read_byte(walk) == 0 
+		   || get_partition_header_checksum(walk) != 
+				calc_partition_header_checksum(walk)) {
+			/* If there's no valid entry, bail out */
+			break;
+		}
+
+		len=get_partition_len(walk);
+		DEBUG("... part len=%x, %x\n", len, len*16);
+
+		if(!len) {
+			/* If there's a partition type but no len, bail out.
+			 * Don't bail out if type is 0. This can be used to
+			 * find the offset of the first free byte.
+			 */
+			break;
+		}
+
+		walk += len * 16;
+	}
+	DEBUG("used nvram space: %d\n", walk);
+
+	return walk;
+}
+
+/**
+ *
+ * @param type partition type. Set this to the partition type you are looking
+ *             for. If there are several partitions with the same type, only
+ *             the first partition with that type will be found.
+ *             Set to -1 to ignore. Set to 0 to find free unpartitioned space.
+ *
+ * @param name partition name. Set this to the name of the partition you are
+ *             looking for. If there are several partitions with the same name,
+ *             only the first partition with that name will be found.
+ *             Set to NULL to ignore.
+ *
+ * To disambiguate the partitions you should have a unique name if you plan to
+ * have several partitions of the same type.
+ *
+ */
+
+partition_t get_partition(unsigned int type, char *name)
+{
+	partition_t ret={0,-1};
+	int walk, len;
+
+	DEBUG("get_partition(%i, '%s')\n", type, name);
+
+	for (walk=0; walk<NVRAM_LENGTH;) {
+		// DEBUG("get_partition: walk=%x\n", walk);
+		if(get_partition_header_checksum(walk) != 
+				calc_partition_header_checksum(walk)) {
+			/* If there's no valid entry, bail out */
+			break;
+		}
+
+		len=get_partition_len(walk);
+		if(type && !len) {
+			/* If there's a partition type but no len, bail out.
+			 * Don't bail out if type is 0. This can be used to
+			 * find the offset of the first free byte.
+			 */
+			break;
+		}
+
+		/* Check if either type or name or both do not match. */
+		if ( (type!=(unsigned int)-1 && type != get_partition_type(walk)) ||
+			(name && strncmp(get_partition_name(walk), name, 12)) ) {
+			/* We hit another partition. Continue
+			 * at the end of this partition
+			 */
+			walk += len*16;
+			continue;
+		}
+
+		ret.addr=walk+PARTITION_HEADER_SIZE;
+		ret.len=(len*16)-PARTITION_HEADER_SIZE;
+		break;
+	}
+
+	return ret;
+}
+
+void erase_nvram(int offset, int len)
+{
+	int i;
+
+	for (i=offset; i<offset+len; i++)
+		nvram_write_byte(i, 0);
+}
+
+void wipe_nvram(void)
+{
+	erase_nvram(0, NVRAM_LENGTH);
+}
+
+/**
+ * @param partition   partition structure pointing to the partition to wipe.
+ * @param header_only if header_only is != 0 only the partition header is
+ *                    nulled out, not the whole partition.
+ */
+
+int wipe_partition(partition_t partition, int header_only)
+{
+	int pstart, len;
+
+	pstart=partition.addr-PARTITION_HEADER_SIZE;
+	
+	len=PARTITION_HEADER_SIZE;
+
+	if(!header_only)
+		len += partition.len;
+
+	erase_nvram(pstart, len);
+
+	return 0;
+}
+
+
+static partition_t create_nvram_partition(int type, const char *name, int len)
+{
+	partition_t ret = { 0, 0 };
+	int offset, plen;
+	unsigned int i;
+
+	plen = ALIGN(len+PARTITION_HEADER_SIZE, 16);
+
+	DEBUG("Creating partition type=%x, name=%s, len=%d plen=%d\n",
+			type, name, len, plen);
+
+	offset = calc_used_nvram_space();
+
+	if (NVRAM_LENGTH-(calc_used_nvram_space())<plen) {
+		DEBUG("Not enough free space.\n");
+		return ret;
+	}
+
+	DEBUG("Writing header.");
+
+	nvram_write_byte(offset, type);
+	nvram_write_word(offset+2, plen/16);
+
+	for (i=0; i<strlen(name); i++)
+		nvram_write_byte(offset+4+i, name[i]);
+
+	nvram_write_byte(offset+1, calc_partition_header_checksum(offset));
+
+	ret.addr = offset+PARTITION_HEADER_SIZE;
+	ret.len = len;
+
+	DEBUG("partition created: addr=%lx len=%lx\n", ret.addr, ret.len);
+
+	return ret;
+}
+
+static int create_free_partition(void)
+{
+	int free_space;
+	partition_t free_part;
+
+	free_space = NVRAM_LENGTH - calc_used_nvram_space() - PARTITION_HEADER_SIZE;
+	free_part = create_nvram_partition(0x7f, "free space", free_space);
+
+	return (free_part.addr != 0);
+}
+
+partition_t new_nvram_partition(int type, char *name, int len)
+{
+	partition_t free_part, new_part = { 0, 0 };
+
+	/* NOTE: Assume all free space is consumed by the "free space"
+	 * partition. This means a partition can not be increased in the middle
+	 * of reset_nvram, which is obviously not a big loss.
+	 */
+
+	free_part=get_partition(0x7f, NULL);
+	if( free_part.len && free_part.len != -1)
+		wipe_partition(free_part, 1);
+
+	new_part = create_nvram_partition(type, name, len);
+
+	if(new_part.len != len) {
+		new_part.len = 0;
+		new_part.addr = 0;
+	}
+
+	create_free_partition();
+
+	return new_part;
+}
+
+/**
+ * @param partition   partition structure pointing to the partition to wipe.
+ */
+
+int delete_nvram_partition(partition_t partition)
+{
+	int i;
+	partition_t free_part;
+
+	if(!partition.len || partition.len == -1)
+		return 0;
+
+	for (i=partition.addr+partition.len; i< NVRAM_LENGTH; i++) 
+		nvram_write_byte(i - partition.len - PARTITION_HEADER_SIZE, nvram_read_byte(i));
+
+	erase_nvram(NVRAM_LENGTH-partition.len-PARTITION_HEADER_SIZE, 
+			partition.len-PARTITION_HEADER_SIZE);
+
+	free_part=get_partition(0x7f, NULL);
+	wipe_partition(free_part, 0);
+	create_free_partition();
+
+	return 1;
+}
+
+int clear_nvram_partition(partition_t part)
+{
+	if(!part.addr)
+		return 0;
+
+	erase_nvram(part.addr, part.len);
+
+	return 1;
+}
+
+
+int increase_nvram_partition_size(partition_t partition, int newsize)
+{
+	partition_t free_part;
+	int free_offset, end_offset, i;
+
+	/* We don't support shrinking partitions (yet) */
+	if (newsize < partition.len) {
+		return 0;
+	}
+
+	/* NOTE: Assume all free space is consumed by the "free space"
+	 * partition. This means a partition can not be increased in the middle
+	 * of reset_nvram, which is obviously not a big loss.
+	 */
+
+	free_part=get_partition(0x7f, NULL);
+
+	// FIXME: It could be 16 byte more. Also handle empty "free" partition.
+	if (free_part.len == -1 || free_part.len < newsize - partition.len ) {
+		return 0;
+	}
+	
+	free_offset=free_part.addr - PARTITION_HEADER_SIZE; // first unused byte
+	end_offset=partition.addr + partition.len; // last used byte of partition + 1
+
+	if(free_offset > end_offset) {
+		int j, bufferlen;
+		char *overlap_buffer;
+
+		bufferlen=free_offset - end_offset;
+
+		overlap_buffer=get_nvram_buffer(bufferlen);
+		if(!overlap_buffer) {
+			return 0;
+		}
+
+		for (i=end_offset, j=0; i<free_offset; i++, j++)
+			overlap_buffer[j]=nvram_read_byte(i);
+
+		/* Only wipe the header. The free space partition is empty per
+		 * definition
+		 */
+
+		wipe_partition(free_part, 1);
+
+		for (i=partition.addr+newsize, j=0; i<(int)(partition.addr+newsize+bufferlen); i++, j++)
+			nvram_write_byte(i, overlap_buffer[j]);
+
+		free_nvram_buffer(overlap_buffer);
+	} else {
+		/* Only wipe the header. */
+		wipe_partition(free_part, 1);
+	}
+
+	/* Clear the new partition space */
+	erase_nvram(partition.addr+partition.len, newsize-partition.len);
+
+	nvram_write_word(partition.addr - 16 + 2, newsize);
+
+	create_free_partition();
+
+	return 1;
+}
+
+static void init_cpulog_partition(partition_t cpulog)
+{
+	unsigned int offset=cpulog.addr;
+
+	/* see board-xxx/include/nvramlog.h for information */
+	nvram_write_word(offset+0, 0x40);  // offset
+	nvram_write_word(offset+2, 0x00);  // flags
+	nvram_write_dword(offset+4, 0x01); // pointer
+
+}
+
+void reset_nvram(void)
+{
+	partition_t cpulog0, cpulog1;
+	struct {
+		uint32_t prefix;
+		uint64_t name;
+	} __attribute__((packed)) header;
+
+	DEBUG("Erasing NVRAM\n");
+	erase_nvram(0, NVRAM_LENGTH);
+
+	DEBUG("Creating CPU log partitions\n");
+	header.prefix = be32_to_cpu(LLFW_LOG_BE0_NAME_PREFIX);
+	header.name   = be64_to_cpu(LLFW_LOG_BE0_NAME);
+	cpulog0=create_nvram_partition(LLFW_LOG_BE0_SIGNATURE, (char *)&header, 
+			(LLFW_LOG_BE0_LENGTH*16)-PARTITION_HEADER_SIZE);
+
+	header.prefix = be32_to_cpu(LLFW_LOG_BE1_NAME_PREFIX);
+	header.name   = be64_to_cpu(LLFW_LOG_BE1_NAME);
+	cpulog1=create_nvram_partition(LLFW_LOG_BE1_SIGNATURE, (char *)&header, 
+			(LLFW_LOG_BE1_LENGTH*16)-PARTITION_HEADER_SIZE);
+
+	DEBUG("Initializing CPU log partitions\n");
+	init_cpulog_partition(cpulog0);
+	init_cpulog_partition(cpulog1);
+
+	nvramlog_printf("Creating common NVRAM partition\r\n");
+	create_nvram_partition(0x70, "common", 0x01000-PARTITION_HEADER_SIZE);
+
+	create_free_partition();
+}
+
+void nvram_debug(void)
+{
+#ifndef RTAS_NVRAM
+	printf("\nNVRAM_BASE: %p\n", nvram);
+	printf("NVRAM_LEN: 0x%x\n", NVRAM_LENGTH);
+#endif
+}
+
+unsigned int get_nvram_size(void)
+{
+	return NVRAM_LENGTH;
+}