269 lines
6.8 KiB
C
269 lines
6.8 KiB
C
/*-
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* Copyright (c) 2017 Intel Corporation
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#include <string.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdbool.h>
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#include "vmmapi.h"
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#include "sw_load.h"
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#include "dm.h"
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#include "pci_core.h"
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int with_bootargs;
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static char bootargs[STR_LEN];
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/*
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* Default e820 mem map:
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*
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* there is reserved memory hole for PCI hole and APIC etc
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* so the memory layout could be separated into lowmem & highmem.
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* - if request memory size <= ctx->lowmem_limit, then there is only
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* map[0]:0~ctx->lowmem for RAM
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* ctx->lowmem = request_memory_size
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* - if request memory size > ctx->lowmem_limit, then there are
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* map[0]:0~ctx->lowmem_limit & map[2]:4G~ctx->highmem for RAM
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* ctx->highmem = request_memory_size - ctx->lowmem_limit
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*
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* Begin Limit Type Length
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* 0: 0 - 0xA0000 RAM 0xA0000
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* 1: 0xA0000 - 0x100000 (reserved) 0x60000
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* 2: 0x100000 - lowmem RAM lowmem - 1MB
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* 3: lowmem - 0x80000000 (reserved) 2GB - lowmem
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* 4: 0x80000000 - 0x100000000 PCI hole, MMIO 2GB
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* 5: 0x100000000 - 0x140000000 PCI hole 1GB
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* 6: 0x140000000 - highmem RAM highmem - 5GB
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*/
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const struct e820_entry e820_default_entries[NUM_E820_ENTRIES] = {
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{ /* 0 to video memory */
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.baseaddr = 0x00000000,
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.length = 0xA0000,
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.type = E820_TYPE_RAM
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},
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{ /* video memory, ROM (used for e820/mptable/smbios/acpi) */
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.baseaddr = 0xA0000,
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.length = 0x60000,
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.type = E820_TYPE_RESERVED
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},
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{ /* 1MB to lowmem */
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.baseaddr = 0x100000,
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.length = 0x48f00000,
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.type = E820_TYPE_RAM
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},
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{ /* lowmem to lowmem_limit */
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.baseaddr = 0x49000000,
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.length = 0x37000000,
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.type = E820_TYPE_RESERVED
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},
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{ /* lowmem_limit to 4GB */
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.baseaddr = 0x80000000,
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.length = 0x80000000,
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.type = E820_TYPE_RESERVED
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},
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{ /* 4GB to 5GB */
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.baseaddr = PCI_EMUL_MEMBASE64,
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.length = PCI_EMUL_MEMLIMIT64 - PCI_EMUL_MEMBASE64,
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.type = E820_TYPE_RESERVED
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},
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{ /* 5GB to highmem */
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.baseaddr = PCI_EMUL_MEMLIMIT64,
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.length = 0x000100000,
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.type = E820_TYPE_RESERVED
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},
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};
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int
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acrn_parse_bootargs(char *arg)
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{
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size_t len = strnlen(arg, STR_LEN);
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if (len < STR_LEN) {
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strncpy(bootargs, arg, len + 1);
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with_bootargs = 1;
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printf("SW_LOAD: get bootargs %s\n", bootargs);
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return 0;
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} else
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return -1;
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}
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char*
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get_bootargs(void)
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{
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return bootargs;
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}
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int
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check_image(char *path, size_t size_limit, size_t *size)
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{
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FILE *fp;
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long len;
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fp = fopen(path, "r");
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if (fp == NULL) {
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fprintf(stderr,
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"SW_LOAD ERR: image file failed to open\n");
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return -1;
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}
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fseek(fp, 0, SEEK_END);
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len = ftell(fp);
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if (len == 0 || (size_limit && len > size_limit)) {
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fprintf(stderr,
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"SW_LOAD ERR: file is %s\n",
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len ? "too large" : "empty");
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fclose(fp);
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return -1;
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}
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fclose(fp);
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*size = len;
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return 0;
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}
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/* Assumption:
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* the range [start, start + size] belongs to one entry of e820 table
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*/
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int
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add_e820_entry(struct e820_entry *e820, int len, uint64_t start,
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uint64_t size, uint32_t type)
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{
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int i, length = len;
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uint64_t e_s, e_e;
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for (i = 0; i < len; i++) {
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e_s = e820[i].baseaddr;
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e_e = e820[i].baseaddr + e820[i].length;
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if ((e_s <= start) && ((start + size) <= e_e)) {
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int index_s = 0, index_e = 3;
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uint64_t pt[4];
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uint32_t pt_t[3];
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pt[0] = e_s;
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pt[1] = start;
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pt[2] = start + size;
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pt[3] = e_e;
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pt_t[0] = e820[i].type;
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pt_t[1] = type;
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pt_t[2] = e820[i].type;
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if (e_s == start) {
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index_s = 1;
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}
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if (e_e == (start + size)) {
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index_e = 2;
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}
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length += index_e - index_s - 1;
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if ((i != (len - 1) && ((index_e - index_s) > 1))) {
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memmove(&e820[i + index_e - index_s],
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&e820[i + 1], (len - i - 1) *
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sizeof(struct e820_entry));
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}
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for (; index_s < index_e; index_s++, i++) {
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e820[i].baseaddr = pt[index_s];
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e820[i].length = pt[index_s + 1] - pt[index_s];
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e820[i].type = pt_t[index_s];
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}
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break;
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}
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}
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return length;
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}
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uint32_t
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acrn_create_e820_table(struct vmctx *ctx, struct e820_entry *e820)
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{
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uint32_t removed = 0, k;
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memcpy(e820, e820_default_entries, sizeof(e820_default_entries));
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assert(ctx->lowmem > e820[LOWRAM_E820_ENTRY].baseaddr);
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e820[LOWRAM_E820_ENTRY].length = ctx->lowmem -
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e820[LOWRAM_E820_ENTRY].baseaddr;
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/* remove [lowmem, lowmem_limit) if it's empty */
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if (ctx->lowmem_limit > ctx->lowmem) {
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e820[LOWRAM_E820_ENTRY+1].baseaddr = ctx->lowmem;
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e820[LOWRAM_E820_ENTRY+1].length =
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ctx->lowmem_limit - ctx->lowmem;
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} else {
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memmove(&e820[LOWRAM_E820_ENTRY+1], &e820[LOWRAM_E820_ENTRY+2],
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sizeof(e820[LOWRAM_E820_ENTRY+2]) *
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(NUM_E820_ENTRIES - (LOWRAM_E820_ENTRY+2)));
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removed++;
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}
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/* remove [5GB, highmem) if it's empty */
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if (ctx->highmem > 0) {
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e820[HIGHRAM_E820_ENTRY - removed].type = E820_TYPE_RAM;
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e820[HIGHRAM_E820_ENTRY - removed].length = ctx->highmem;
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} else {
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removed++;
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}
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printf("SW_LOAD: build e820 %d entries to addr: %p\r\n",
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NUM_E820_ENTRIES - removed, (void *)e820);
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for (k = 0; k < NUM_E820_ENTRIES - removed; k++)
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printf("SW_LOAD: entry[%d]: addr 0x%016lx, size 0x%016lx, "
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" type 0x%x\r\n",
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k, e820[k].baseaddr,
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e820[k].length,
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e820[k].type);
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return (NUM_E820_ENTRIES - removed);
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}
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int
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acrn_sw_load(struct vmctx *ctx)
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{
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if (vsbl_file_name)
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return acrn_sw_load_vsbl(ctx);
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else if (ovmf_file_name)
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return acrn_sw_load_ovmf(ctx);
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else if (kernel_file_name)
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return acrn_sw_load_bzimage(ctx);
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else if (elf_file_name)
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return acrn_sw_load_elf(ctx);
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else
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return -1;
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}
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