search for: boot_param

>That address seems to come from >here: https://github.com/torvalds/linux/blob/5924bbecd0267d87c24110cbe2041b5075173a25/arch/x86/boot/pm.c#L124 > >``` >protected_mode_jump(boot_params.hdr.code32_start, > (u32)&boot_params + (ds() << 4)); >``` > >That boot_params.hdr.code32_start field is probably either invalid (bad reloc or something else causing the bootloader to >calculate the wrong address) or valid but the thing it thinks it is pointing to wasn...

...HDRs to specify how much memory Xen needs to map initially. The ELF file is constructed so that the PHDRs map enough memory for the kernel to decompress itself, and run enough until it can build its own initial pagetables. The Linux boot protocol requires that %esi point to the boot_params block on entry. Unfortunately this conflicts with the normal Xen boot protocol, which starts with %esi pointing to a struct start_info. In order to implement this, I've had to muck up Gerd's nice clean layering a little bit. struct xc_dom_image now has a bootparams_pfn, which is set by...

...HDRs to specify how much memory Xen needs to map initially. The ELF file is constructed so that the PHDRs map enough memory for the kernel to decompress itself, and run enough until it can build its own initial pagetables. The Linux boot protocol requires that %esi point to the boot_params block on entry. Unfortunately this conflicts with the normal Xen boot protocol, which starts with %esi pointing to a struct start_info. In order to implement this, I've had to muck up Gerd's nice clean layering a little bit. struct xc_dom_image now has a bootparams_pfn, which is set by...

...HDRs to specify how much memory Xen needs to map initially. The ELF file is constructed so that the PHDRs map enough memory for the kernel to decompress itself, and run enough until it can build its own initial pagetables. The Linux boot protocol requires that %esi point to the boot_params block on entry. Unfortunately this conflicts with the normal Xen boot protocol, which starts with %esi pointing to a struct start_info. In order to implement this, I've had to muck up Gerd's nice clean layering a little bit. struct xc_dom_image now has a bootparams_pfn, which is set by...

>I have just checked it, the startup.elf and realmode.elf are fine. Only few changes are required for mainline kernel and one >commit has to be reverted from lld and a few patches have to be applied. > >The only step when I have used BFD is linking vmlinux. I have manually set LD variable in vmlinux_link() function. The vmlinux >produced by lld doesn't work yet. I will compare

...xes-inc.com> --- efi/main.c | 81 ++++++++++++++++++++++++++++++++++++++++++++++-------- 1 file changed, 70 insertions(+), 11 deletions(-) diff --git a/efi/main.c b/efi/main.c index 6a748412..d7fb637e 100644 --- a/efi/main.c +++ b/efi/main.c @@ -1008,16 +1008,81 @@ static int exit_boot(struct boot_params *bp) EFI_MEMORY_DESCRIPTOR *map; EFI_STATUS status; uint32_t e820_type; - UINTN i, nr_entries, key, desc_sz; + UINTN i, nr_entries, key, desc_sz, buf_sz, map_sz; UINT32 desc_ver; + /* + * Call once with empty buffer size to + * see how large the buffer should be. + */ + buf_sz = 0; +...

From: Sylvain Gault <sylvain.gault at gmail.com> On some architecture, including my hardware, the function ExitBootServices may need to be called twice in order to successfully exit the boot services. As stated by the UEFI spec, the first call to ExitBootServices may perform a partial shutdown of the services. It seems that during this partial shutdown, the memory map can be modified, thus

...on Sunday. With that said, please git pull the following tag: git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen.git stable/for-linus-3.10-rc0-tag which has just a couple of features and mostly bug-fixes. Here is the blurb copied from the signed tag: <tag> Features: - Populate the boot_params with EDD data. - Cleanups in the IRQ code. Bug-fixes: - CPU hotplug offline/online in PVHVM mode. - Re-upload processor PM data after ACPI S3 suspend/resume cycle. </tag> Please pull! arch/x86/pci/xen.c | 6 +-- arch/x86/xen/enlighten.c | 57 +++++++++++++++++++++...

>>That boot_params.hdr.code32_start field is probably either invalid (bad reloc or something else causing the bootloader to >>calculate the wrong address) or valid but the thing it thinks it is pointing to wasn't loaded (missing PT_LOAD etc.). >boot_params.hdr.code32_start field is valid :) It is 0x1000...

...nc.com> --- efi/main.c | 81 ++++++++++++++++++++++++++++++++++++++++++++++-------- 1 file changed, 70 insertions(+), 11 deletions(-) diff --git a/efi/main.c b/efi/main.c index 6a748412..d7fb637e 100644 --- a/efi/main.c +++ b/efi/main.c @@ -1008,16 +1008,81 @@ static int exit_boot(struct boot_params *bp) EFI_MEMORY_DESCRIPTOR *map; EFI_STATUS status; uint32_t e820_type; - UINTN i, nr_entries, key, desc_sz; + UINTN i, nr_entries, key, desc_sz, buf_sz, map_sz; UINT32 desc_ver; + /* + * Call once with empty buffer size to + * see how large the buffer should be. + */ + buf_sz = 0; +...

...input, unsigned long input_size, */ mem_avoid[MEM_AVOID_ZO_RANGE].start = input; mem_avoid[MEM_AVOID_ZO_RANGE].size = (output + init_size) - input; - add_identity_map(mem_avoid[MEM_AVOID_ZO_RANGE].start, - mem_avoid[MEM_AVOID_ZO_RANGE].size); /* Avoid initrd. */ initrd_start = (u64)boot_params->ext_ramdisk_image << 32; @@ -420,14 +418,10 @@ static void mem_avoid_init(unsigned long input, unsigned long input_size, ; mem_avoid[MEM_AVOID_CMDLINE].start = cmd_line; mem_avoid[MEM_AVOID_CMDLINE].size = cmd_line_size; - add_identity_map(mem_avoid[MEM_AVOID_CMDLINE].start, -...

...OO_SMALL); > + > + if (status == EFI_SUCCESS) { > + *nr_entries = size / *desc_sz; > + return map; > + } > + > + if (map) > + FreePool(map); > + return NULL; > +} > + > static int exit_boot(struct boot_params *bp) > { > struct e820_entry *e820buf, *e; > EFI_MEMORY_DESCRIPTOR *map; > EFI_STATUS status; > uint32_t e820_type; > - UINTN i, nr_entries, key, desc_sz; > + UINTN i, nr_entries, key, desc_sz, allocsize; > UINT32 desc_ve...

This series: 1. Updates the boot protocol to version 2.07 2. Clean up the existing build process, to get rid of tools/build and make the linker do more heavy lifting 3. Make the bzImage payload an ELF file. The bootloader can extract this as a naked ELF file by skipping over boot_params.setup_sects worth of 16-bit setup code. 4. Update the boot_params to 2.07, and update the kernel's head.S to jump to the appropriate subarch-specific kernel entrypoint. The very earliest code is common (copy boot_params, clear bss); the split happens just before the initial p...

This series: 1. Updates the boot protocol to version 2.07 2. Clean up the existing build process, to get rid of tools/build and make the linker do more heavy lifting 3. Make the bzImage payload an ELF file. The bootloader can extract this as a naked ELF file by skipping over boot_params.setup_sects worth of 16-bit setup code. 4. Update the boot_params to 2.07, and update the kernel's head.S to jump to the appropriate subarch-specific kernel entrypoint. The very earliest code is common (copy boot_params, clear bss); the split happens just before the initial p...

...eadd *= 2; + *allocsize = size + allocsizeadd; + map = AllocatePool(*allocsize); + } + } while (status == EFI_BUFFER_TOO_SMALL); + + if (status == EFI_SUCCESS) { + *nr_entries = size / *desc_sz; + return map; + } + + if (map) + FreePool(map); + return NULL; +} + static int exit_boot(struct boot_params *bp) { struct e820_entry *e820buf, *e; EFI_MEMORY_DESCRIPTOR *map; EFI_STATUS status; uint32_t e820_type; - UINTN i, nr_entries, key, desc_sz; + UINTN i, nr_entries, key, desc_sz, allocsize; UINT32 desc_ver; + int retry; - /* Build efi memory map */ - map = get_memory_map(&nr_entr...

...insertions(+), 5 deletions(-) diff --git a/arch/x86/include/asm/setup.h b/arch/x86/include/asm/setup.h index 5c2fd05bd52c..8aa6ba0427b0 100644 --- a/arch/x86/include/asm/setup.h +++ b/arch/x86/include/asm/setup.h @@ -74,6 +74,16 @@ static inline void x86_ce4100_early_setup(void) { } extern struct boot_params boot_params; extern char _text[]; +/* + * This function is used in C code that runs while the kernel still runs on + * identity mapped addresses to get the correct address of kernel pointers in + * the identity mapping. + */ +static __always_inline void *fixup_pointer(void *ptr, unsigned long p...

...addr, @@ -49,6 +50,7 @@ void __init mem_encrypt_free_decrypted_mem(void); bool sme_active(void); bool sev_active(void); +bool sev_es_active(void); #define __bss_decrypted __attribute__((__section__(".bss..decrypted"))) @@ -71,6 +73,7 @@ static inline void __init sme_enable(struct boot_params *bp) { } static inline bool sme_active(void) { return false; } static inline bool sev_active(void) { return false; } +static inline bool sev_es_active(void) { return false; } static inline int __init early_set_memory_decrypted(unsigned long vaddr, unsigned long size) { return 0; } diff --g...

...ypted_kernel_vaddr, @@ -50,6 +51,7 @@ void __init mem_encrypt_init(void); bool sme_active(void); bool sev_active(void); +bool sev_es_active(void); #define __bss_decrypted __attribute__((__section__(".bss..decrypted"))) @@ -72,6 +74,7 @@ static inline void __init sme_enable(struct boot_params *bp) { } static inline bool sme_active(void) { return false; } static inline bool sev_active(void) { return false; } +static inline bool sev_es_active(void) { return false; } static inline int __init early_set_memory_decrypted(unsigned long vaddr, unsigned long size) { return 0; } diff --g...

...); void __init mem_encrypt_free_decrypted_mem(void); +void __init encrypted_state_init_ghcbs(void); bool sme_active(void); bool sev_active(void); bool sev_es_active(void); @@ -71,6 +72,7 @@ static inline void __init sme_early_init(void) { } static inline void __init sme_encrypt_kernel(struct boot_params *bp) { } static inline void __init sme_enable(struct boot_params *bp) { } +static inline void encrypted_state_init_ghcbs(void) { } static inline bool sme_active(void) { return false; } static inline bool sev_active(void) { return false; } static inline bool sev_es_active(void) { return false...

...ypted_kernel_vaddr, @@ -50,6 +51,7 @@ void __init mem_encrypt_init(void); bool sme_active(void); bool sev_active(void); +bool sev_es_active(void); #define __bss_decrypted __attribute__((__section__(".bss..decrypted"))) @@ -72,6 +74,7 @@ static inline void __init sme_enable(struct boot_params *bp) { } static inline bool sme_active(void) { return false; } static inline bool sev_active(void) { return false; } +static inline bool sev_es_active(void) { return false; } static inline int __init early_set_memory_decrypted(unsigned long vaddr, unsigned long size) { return 0; } diff --g...