mirror of
https://github.com/projectacrn/acrn-hypervisor.git
synced 2025-06-28 16:27:01 +00:00
HV: code style change for multiboot.c
- to make sure procedure has one exit point; - add NULL pointer check; Tracked-On: #861 Signed-off-by: Victor Sun <victor.sun@intel.com> Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Victor Sun
Eddie Dong
parent
dff6781293
commit
5c278cc57b
@ -21,49 +21,42 @@ int32_t init_vm_boot_info(struct acrn_vm *vm)
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{
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struct multiboot_module *mods = NULL;
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struct multiboot_info *mbi = NULL;
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int32_t ret = -EINVAL;
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if (boot_regs[0] != MULTIBOOT_INFO_MAGIC) {
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ASSERT(false, "no multiboot info found");
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return -EINVAL;
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} else {
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mbi = hpa2hva((uint64_t)boot_regs[1]);
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if (mbi != NULL) {
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stac();
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dev_dbg(ACRN_DBG_BOOT, "Multiboot detected, flag=0x%x", mbi->mi_flags);
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if ((mbi->mi_flags & MULTIBOOT_INFO_HAS_MODS) == 0U) {
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clac();
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ASSERT(false, "no kernel info found");
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} else {
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dev_dbg(ACRN_DBG_BOOT, "mod counts=%d\n", mbi->mi_mods_count);
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/* mod[0] is for kernel&cmdline, other mod for ramdisk/firmware info*/
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mods = (struct multiboot_module *)(uint64_t)mbi->mi_mods_addr;
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dev_dbg(ACRN_DBG_BOOT, "mod0 start=0x%x, end=0x%x",
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mods[0].mm_mod_start, mods[0].mm_mod_end);
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dev_dbg(ACRN_DBG_BOOT, "cmd addr=0x%x, str=%s",
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mods[0].mm_string, (char *)(uint64_t)mods[0].mm_string);
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vm->sw.kernel_type = VM_LINUX_GUEST;
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vm->sw.kernel_info.kernel_src_addr = hpa2hva((uint64_t)mods[0].mm_mod_start);
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vm->sw.kernel_info.kernel_size = mods[0].mm_mod_end - mods[0].mm_mod_start;
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vm->sw.kernel_info.kernel_load_addr = (void *)(16 * 1024 * 1024UL);
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vm->sw.linux_info.bootargs_src_addr = (void *)vm->vm_desc->bootargs;
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vm->sw.linux_info.bootargs_size = strnlen_s(vm->vm_desc->bootargs, MEM_2K);
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vm->sw.linux_info.bootargs_load_addr = (void *)(vm->vm_desc->mem_size - 8*1024UL);
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clac();
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ret = 0;
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}
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}
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}
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mbi = hpa2hva((uint64_t)boot_regs[1]);
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stac();
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dev_dbg(ACRN_DBG_BOOT, "Multiboot detected, flag=0x%x", mbi->mi_flags);
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if ((mbi->mi_flags & MULTIBOOT_INFO_HAS_MODS) == 0U) {
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clac();
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ASSERT(false, "no kernel info found");
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return -EINVAL;
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}
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dev_dbg(ACRN_DBG_BOOT, "mod counts=%d\n", mbi->mi_mods_count);
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/* mod[0] is for kernel&cmdline, other mod for ramdisk/firmware info*/
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mods = (struct multiboot_module *)(uint64_t)mbi->mi_mods_addr;
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dev_dbg(ACRN_DBG_BOOT, "mod0 start=0x%x, end=0x%x",
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mods[0].mm_mod_start, mods[0].mm_mod_end);
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dev_dbg(ACRN_DBG_BOOT, "cmd addr=0x%x, str=%s", mods[0].mm_string,
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(char *) (uint64_t)mods[0].mm_string);
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vm->sw.kernel_type = VM_LINUX_GUEST;
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vm->sw.kernel_info.kernel_src_addr =
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hpa2hva((uint64_t)mods[0].mm_mod_start);
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vm->sw.kernel_info.kernel_size =
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mods[0].mm_mod_end - mods[0].mm_mod_start;
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vm->sw.kernel_info.kernel_load_addr = (void *)(16 * 1024 * 1024UL);
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vm->sw.linux_info.bootargs_src_addr =
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(void *)vm->vm_desc->bootargs;
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vm->sw.linux_info.bootargs_size =
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strnlen_s(vm->vm_desc->bootargs, MEM_2K);
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vm->sw.linux_info.bootargs_load_addr = (void *)(vm->vm_desc->mem_size - 8*1024UL);
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clac();
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return 0;
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return ret;
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}
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#else
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@ -75,8 +68,7 @@ int32_t init_vm_boot_info(struct acrn_vm *vm)
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static char kernel_cmdline[MEM_2K];
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/* now modules support: FIRMWARE & RAMDISK & SeedList */
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static void parse_other_modules(struct acrn_vm *vm,
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const struct multiboot_module *mods, uint32_t mods_count)
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static void parse_other_modules(struct acrn_vm *vm, const struct multiboot_module *mods, uint32_t mods_count)
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{
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uint32_t i;
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@ -104,14 +96,12 @@ static void parse_other_modules(struct acrn_vm *vm,
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type_len = end - start;
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if (strncmp("FIRMWARE", start, type_len) == 0) {
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char dyn_bootargs[100] = {'\0'};
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void *load_addr = gpa2hva(vm,
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(uint64_t)vm->sw.linux_info.bootargs_load_addr);
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void *load_addr = gpa2hva(vm, (uint64_t)vm->sw.linux_info.bootargs_load_addr);
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uint32_t args_size = vm->sw.linux_info.bootargs_size;
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static int32_t copy_once = 1;
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start = end + 1; /*it is fw name for boot args */
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snprintf(dyn_bootargs, 100U, " %s=0x%x@0x%x ",
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start, mod_size, mod_addr);
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snprintf(dyn_bootargs, 100U, " %s=0x%x@0x%x ", start, mod_size, mod_addr);
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dev_dbg(ACRN_DBG_BOOT, "fw-%d: %s", i, dyn_bootargs);
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/*copy boot args to load addr, set src=load addr*/
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@ -123,13 +113,11 @@ static void parse_other_modules(struct acrn_vm *vm,
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}
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(void)strncpy_s(load_addr + args_size, 100U, dyn_bootargs, 100U);
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vm->sw.linux_info.bootargs_size =
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strnlen_s(load_addr, MEM_2K);
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vm->sw.linux_info.bootargs_size = strnlen_s(load_addr, MEM_2K);
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} else if (strncmp("RAMDISK", start, type_len) == 0) {
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vm->sw.linux_info.ramdisk_src_addr = mod_addr;
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vm->sw.linux_info.ramdisk_load_addr =
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(void *)(uint64_t)mods[i].mm_mod_start;
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vm->sw.linux_info.ramdisk_load_addr = (void *)(uint64_t)mods[i].mm_mod_start;
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vm->sw.linux_info.ramdisk_size = mod_size;
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} else {
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pr_warn("not support mod, cmd: %s", start);
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@ -170,103 +158,100 @@ int32_t init_vm_boot_info(struct acrn_vm *vm)
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{
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struct multiboot_module *mods = NULL;
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struct multiboot_info *mbi = NULL;
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int32_t ret = -EINVAL;
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if (boot_regs[0] != MULTIBOOT_INFO_MAGIC) {
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ASSERT(false, "no multiboot info found");
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return -EINVAL;
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}
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mbi = (struct multiboot_info *)hpa2hva((uint64_t)boot_regs[1]);
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stac();
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dev_dbg(ACRN_DBG_BOOT, "Multiboot detected, flag=0x%x", mbi->mi_flags);
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if ((mbi->mi_flags & MULTIBOOT_INFO_HAS_MODS) == 0U) {
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ASSERT(false, "no sos kernel info found");
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clac();
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return -EINVAL;
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}
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dev_dbg(ACRN_DBG_BOOT, "mod counts=%d\n", mbi->mi_mods_count);
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/* mod[0] is for kernel&cmdline, other mod for ramdisk/firmware info*/
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mods = (struct multiboot_module *)hpa2hva((uint64_t)mbi->mi_mods_addr);
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dev_dbg(ACRN_DBG_BOOT, "mod0 start=0x%x, end=0x%x",
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mods[0].mm_mod_start, mods[0].mm_mod_end);
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dev_dbg(ACRN_DBG_BOOT, "cmd addr=0x%x, str=%s", mods[0].mm_string,
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(char *) (uint64_t)mods[0].mm_string);
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vm->sw.kernel_type = VM_LINUX_GUEST;
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vm->sw.kernel_info.kernel_src_addr =
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hpa2hva((uint64_t)mods[0].mm_mod_start);
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vm->sw.kernel_info.kernel_size =
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mods[0].mm_mod_end - mods[0].mm_mod_start;
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vm->sw.kernel_info.kernel_load_addr = (void *)hva2gpa(vm,
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get_kernel_load_addr(vm->sw.kernel_info.kernel_src_addr));
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/*
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* If there is cmdline from mbi->mi_cmdline, merge it with
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* mods[0].mm_string
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*/
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if ((mbi->mi_flags & MULTIBOOT_INFO_HAS_CMDLINE) != 0U) {
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char *cmd_src, *cmd_dst;
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uint32_t off = 0U;
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bool status = false;
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char buf[MAX_BOOT_PARAMS_LEN];
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cmd_dst = kernel_cmdline;
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cmd_src = (char *)hpa2hva((uint64_t)mbi->mi_cmdline);
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(void)memset(buf, 0U, sizeof(buf));
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/*
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* The seed passing interface is different for ABL and SBL,
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* so here first try to get seed from SBL, if fail then try
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* ABL.
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*/
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status = sbl_seed_parse(vm, cmd_src, buf, sizeof(buf));
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if (!status) {
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status = abl_seed_parse(vm, cmd_src, buf, sizeof(buf));
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}
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if (status) {
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/*
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* append the seed argument to kernel cmdline
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*/
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(void)strncpy_s(cmd_dst, MEM_2K, buf,
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MAX_BOOT_PARAMS_LEN);
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off = strnlen_s(cmd_dst, MEM_2K);
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}
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cmd_dst += off;
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(void)strncpy_s(cmd_dst, MEM_2K - off, cmd_src,
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strnlen_s(cmd_src, MEM_2K - off));
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off = strnlen_s(cmd_dst, MEM_2K - off);
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cmd_dst[off] = ' '; /* insert space */
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off += 1U;
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cmd_dst += off;
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cmd_src = (char *)hpa2hva((uint64_t)mods[0].mm_string);
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(void)strncpy_s(cmd_dst, MEM_2K - off, cmd_src,
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strnlen_s(cmd_src, MEM_2K - off));
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vm->sw.linux_info.bootargs_src_addr = kernel_cmdline;
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vm->sw.linux_info.bootargs_size =
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strnlen_s(kernel_cmdline, MEM_2K);
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} else {
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vm->sw.linux_info.bootargs_src_addr =
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hpa2hva((uint64_t)mods[0].mm_string);
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vm->sw.linux_info.bootargs_size =
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strnlen_s(hpa2hva((uint64_t)mods[0].mm_string),
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MEM_2K);
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}
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mbi = (struct multiboot_info *)hpa2hva((uint64_t)boot_regs[1]);
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vm->sw.linux_info.bootargs_load_addr = (void *)BOOT_ARGS_LOAD_ADDR;
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if (mbi != NULL) {
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stac();
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dev_dbg(ACRN_DBG_BOOT, "Multiboot detected, flag=0x%x", mbi->mi_flags);
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if ((mbi->mi_flags & MULTIBOOT_INFO_HAS_MODS) == 0U) {
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ASSERT(false, "no sos kernel info found");
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clac();
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} else {
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if (mbi->mi_mods_count > 1U) {
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/*parse other modules, like firmware /ramdisk */
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parse_other_modules(vm, mods + 1, mbi->mi_mods_count - 1);
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dev_dbg(ACRN_DBG_BOOT, "mod counts=%d\n", mbi->mi_mods_count);
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/* mod[0] is for kernel&cmdline, other mod for ramdisk/firmware info*/
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mods = (struct multiboot_module *)hpa2hva((uint64_t)mbi->mi_mods_addr);
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dev_dbg(ACRN_DBG_BOOT, "mod0 start=0x%x, end=0x%x",
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mods[0].mm_mod_start, mods[0].mm_mod_end);
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dev_dbg(ACRN_DBG_BOOT, "cmd addr=0x%x, str=%s", mods[0].mm_string,
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(char *)(uint64_t)mods[0].mm_string);
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vm->sw.kernel_type = VM_LINUX_GUEST;
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vm->sw.kernel_info.kernel_src_addr = hpa2hva((uint64_t)mods[0].mm_mod_start);
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vm->sw.kernel_info.kernel_size = mods[0].mm_mod_end - mods[0].mm_mod_start;
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vm->sw.kernel_info.kernel_load_addr =
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(void *)hva2gpa(vm, get_kernel_load_addr(vm->sw.kernel_info.kernel_src_addr));
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/*
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* If there is cmdline from mbi->mi_cmdline, merge it with
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* mods[0].mm_string
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*/
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if ((mbi->mi_flags & MULTIBOOT_INFO_HAS_CMDLINE) != 0U) {
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char *cmd_src, *cmd_dst;
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uint32_t off = 0U;
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bool status = false;
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char buf[MAX_BOOT_PARAMS_LEN];
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cmd_dst = kernel_cmdline;
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cmd_src = (char *)hpa2hva((uint64_t)mbi->mi_cmdline);
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(void)memset(buf, 0U, sizeof(buf));
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/*
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* The seed passing interface is different for ABL and SBL,
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* so here first try to get seed from SBL, if fail then try
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* ABL.
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*/
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status = sbl_seed_parse(vm, cmd_src, buf, sizeof(buf));
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if (!status) {
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status = abl_seed_parse(vm, cmd_src, buf, sizeof(buf));
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}
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if (status) {
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/*
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* append the seed argument to kernel cmdline
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*/
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(void)strncpy_s(cmd_dst, MEM_2K, buf, MAX_BOOT_PARAMS_LEN);
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off = strnlen_s(cmd_dst, MEM_2K);
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}
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cmd_dst += off;
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(void)strncpy_s(cmd_dst, MEM_2K - off, (const char *)cmd_src,
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strnlen_s(cmd_src, MEM_2K - off));
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off = strnlen_s(cmd_dst, MEM_2K - off);
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cmd_dst[off] = ' '; /* insert space */
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off += 1U;
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cmd_dst += off;
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cmd_src = (char *)hpa2hva((uint64_t)mods[0].mm_string);
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(void)strncpy_s(cmd_dst, MEM_2K - off, cmd_src,
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strnlen_s(cmd_src, MEM_2K - off));
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vm->sw.linux_info.bootargs_src_addr = kernel_cmdline;
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vm->sw.linux_info.bootargs_size = strnlen_s(kernel_cmdline, MEM_2K);
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} else {
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vm->sw.linux_info.bootargs_src_addr = hpa2hva((uint64_t)mods[0].mm_string);
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vm->sw.linux_info.bootargs_size =
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strnlen_s(hpa2hva((uint64_t)mods[0].mm_string), MEM_2K);
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}
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vm->sw.linux_info.bootargs_load_addr = (void *)BOOT_ARGS_LOAD_ADDR;
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if (mbi->mi_mods_count > 1U) {
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/*parse other modules, like firmware /ramdisk */
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parse_other_modules(vm, mods + 1, mbi->mi_mods_count - 1);
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}
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clac();
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ret = 0;
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}
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}
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}
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clac();
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return 0;
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return ret;
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}
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#endif
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