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hv: Other preparation for trampoline code relocation
- For UEFI boot, allocate memory for trampoline code in ACRN EFI, and pass the pointer to HV through efi_ctx - Correct LOW_RAM_SIZE and LOW_RAM_START in Kconfig and bsp_cfg.h - use trampline_start16_paddr instead of the hardcoded CONFIG_LOW_RAM_START for initial guest GDT and page tables Signed-off-by: Zheng, Gen <gen.zheng@intel.com> Signed-off-by: Jason Chen CJ <jason.cj.chen@intel.com> Signed-off-by: Zide Chen <zide.chen@intel.com> Acked-by: Eddie Dong <eddie.dong@intel.com> Acked-by: Xu, Anthony <anthony.xu@intel.com>
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@ -74,15 +74,9 @@ config MEM_LOGLEVEL_DEFAULT
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int "Default loglevel in memory"
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default 4
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config LOW_RAM_START
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hex "Address of the beginning of low RAM region"
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default 0x00001000 if PLATFORM_SBL
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default 0x00008000 if PLATFORM_UEFI
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config LOW_RAM_SIZE
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hex "Size of the low RAM region"
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default 0x000cf000 if PLATFORM_SBL
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default 0x00010000 if PLATFORM_UEFI
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default 0x00010000
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config RAM_START
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hex "Address of the RAM region assigned to the hypervisor"
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@ -26,6 +26,8 @@ volatile uint32_t up_count = 0;
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/* physical cpu active bitmap, support up to 64 cpus */
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uint64_t pcpu_active_bitmap = 0;
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uint64_t trampline_start16_paddr;
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/* TODO: add more capability per requirement */
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/*APICv features*/
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#define VAPIC_FEATURE_VIRT_ACCESS (1 << 0)
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@ -674,9 +674,8 @@ uint64_t e820_alloc_low_memory(uint32_t size)
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* This API assume that the trusty memory is remapped to guest physical address
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* of 511G to 511G + 16MB
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*
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* FIXME: here using hard code GUEST_INIT_PAGE_TABLE_START as guest init page
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* table gpa start, and it will occupy at most GUEST_INIT_PT_PAGE_NUM pages.
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* Some check here:
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* FIXME: here the guest init page table will occupy at most
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* GUEST_INIT_PT_PAGE_NUM pages. Some check here:
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* - guest page table space should not override trampline code area
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* (it's a little tricky here, as under current identical mapping, HV & SOS
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* share same memory under 1M; under uefi boot mode, the defered AP startup
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@ -688,7 +687,7 @@ uint64_t e820_alloc_low_memory(uint32_t size)
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* after guest realmode/32bit no paging mode got supported.
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******************************************************************/
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#define GUEST_INIT_PAGE_TABLE_SKIP_SIZE 0x8000UL
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#define GUEST_INIT_PAGE_TABLE_START (CONFIG_LOW_RAM_START + \
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#define GUEST_INIT_PAGE_TABLE_START (trampline_start16_paddr + \
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GUEST_INIT_PAGE_TABLE_SKIP_SIZE)
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#define GUEST_INIT_PT_PAGE_NUM 7
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#define RSDP_F_ADDR 0xE0000
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@ -794,7 +793,7 @@ uint64_t create_guest_initial_paging(struct vm *vm)
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******************************************************************/
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#define GUEST_INIT_GDT_SKIP_SIZE 0x8000UL
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#define GUEST_INIT_GDT_START (CONFIG_LOW_RAM_START + \
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#define GUEST_INIT_GDT_START (trampline_start16_paddr + \
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GUEST_INIT_GDT_SKIP_SIZE)
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/* The GDT defined below compatible with linux kernel */
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@ -17,8 +17,7 @@
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#define HEAP_SIZE 0x100000
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#define CONSOLE_LOGLEVEL_DEFAULT 3
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#define MEM_LOGLEVEL_DEFAULT 5
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#define CONFIG_LOW_RAM_START 0x00001000
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#define CONFIG_LOW_RAM_SIZE 0x000CF000
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#define CONFIG_LOW_RAM_SIZE 0x00010000
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#define CONFIG_RAM_START 0x6E000000
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#define CONFIG_RAM_SIZE 0x02000000 /* 32M */
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#define CONFIG_MTRR_ENABLED 1
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@ -190,12 +190,6 @@ again:
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mmap[j].mm_type = E820_RAM;
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j++;
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/* reserve secondary memory region(0x1000 ~ 0x10000) for hv */
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err = __emalloc(CONFIG_LOW_RAM_SIZE, CONFIG_LOW_RAM_START,
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&addr, EfiReservedMemoryType);
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if (err != EFI_SUCCESS)
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goto out;
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mbi->mi_flags |= MULTIBOOT_INFO_HAS_MMAP | MULTIBOOT_INFO_HAS_CMDLINE;
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mbi->mi_mmap_length = j*sizeof(struct multiboot_mmap);
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@ -227,6 +221,13 @@ switch_to_guest_mode(EFI_HANDLE image)
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efi_ctx = (struct efi_ctx *)(UINTN)addr;
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/* reserve secondary memory region for hv */
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err = emalloc_for_low_mem(&addr, CONFIG_LOW_RAM_SIZE);
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if (err != EFI_SUCCESS)
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goto out;
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efi_ctx->ap_trampline_buf = (void *)addr;
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config_table = sys_table->ConfigurationTable;
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for (i = 0; i < sys_table->NumberOfTableEntries; i++) {
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@ -95,6 +95,7 @@ struct e820_entry {
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struct efi_ctx {
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uint64_t rip;
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VOID *rsdp;
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VOID *ap_trampline_buf;
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dt_addr_t gdt;
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dt_addr_t idt;
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uint16_t tr_sel;
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@ -17,7 +17,6 @@
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#define HEAP_SIZE 0x100000
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#define CONSOLE_LOGLEVEL_DEFAULT 3
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#define MEM_LOGLEVEL_DEFAULT 5
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#define CONFIG_LOW_RAM_START 0x00008000
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#define CONFIG_LOW_RAM_SIZE 0x00010000
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#define CONFIG_RAM_START 0x20000000
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#define CONFIG_RAM_SIZE 0x02000000 /* 32M */
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@ -97,6 +97,11 @@ void *get_rsdp_from_uefi(void)
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return HPA2HVA(efi_ctx->rsdp);
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}
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void *get_ap_trampline_buf(void)
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{
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return efi_ctx->ap_trampline_buf;
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}
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static void efi_init(void)
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{
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struct multiboot_info *mbi = NULL;
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@ -169,6 +169,7 @@ extern uint8_t trampline_pdpt_addr[];
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extern uint8_t trampline_gdt_ptr[];
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extern uint8_t trampline_start64_fixup[];
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extern uint64_t trampline_start16_paddr;
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extern int ibrs_type;
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/*
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@ -15,6 +15,7 @@ typedef struct {
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struct efi_ctx {
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uint64_t rip;
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void *rsdp;
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void *ap_trampline_buf;
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dt_addr_t gdt;
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dt_addr_t idt;
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uint16_t tr_sel;
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@ -50,5 +51,6 @@ struct efi_ctx {
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}__attribute__((packed));
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void *get_rsdp_from_uefi(void);
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void *get_ap_trampline_buf(void);
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#endif /* UEFI_H*/
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