diff options
Diffstat (limited to 'arch/x86/lib')
-rw-r--r-- | arch/x86/lib/bootm.c | 56 | ||||
-rw-r--r-- | arch/x86/lib/physmem.c | 33 | ||||
-rw-r--r-- | arch/x86/lib/zimage.c | 47 |
3 files changed, 58 insertions, 78 deletions
diff --git a/arch/x86/lib/bootm.c b/arch/x86/lib/bootm.c index 4c5c7f5aa7..86030cf52a 100644 --- a/arch/x86/lib/bootm.c +++ b/arch/x86/lib/bootm.c @@ -10,10 +10,12 @@ #include <common.h> #include <command.h> +#include <errno.h> #include <fdt_support.h> #include <image.h> #include <u-boot/zlib.h> #include <asm/bootparam.h> +#include <asm/cpu.h> #include <asm/byteorder.h> #include <asm/zimage.h> #ifdef CONFIG_SYS_COREBOOT @@ -109,17 +111,17 @@ static int boot_prep_linux(bootm_headers_t *images) } if (is_zimage) { - void *load_address; + ulong load_address; char *base_ptr; base_ptr = (char *)load_zimage(data, len, &load_address); - images->os.load = (ulong)load_address; + images->os.load = load_address; cmd_line_dest = base_ptr + COMMAND_LINE_OFFSET; images->ep = (ulong)base_ptr; } else if (images->ep) { cmd_line_dest = (void *)images->ep + COMMAND_LINE_OFFSET; } else { - printf("## Kernel loading failed (no setup) ...\n"); + printf("## Kernel loading failed (missing x86 kernel setup) ...\n"); goto error; } @@ -139,16 +141,50 @@ error: return 1; } +int boot_linux_kernel(ulong setup_base, ulong load_address, bool image_64bit) +{ + bootm_announce_and_cleanup(); + +#ifdef CONFIG_SYS_COREBOOT + timestamp_add_now(TS_U_BOOT_START_KERNEL); +#endif + if (image_64bit) { + if (!cpu_has_64bit()) { + puts("Cannot boot 64-bit kernel on 32-bit machine\n"); + return -EFAULT; + } + return cpu_jump_to_64bit(setup_base, load_address); + } else { + /* + * Set %ebx, %ebp, and %edi to 0, %esi to point to the + * boot_params structure, and then jump to the kernel. We + * assume that %cs is 0x10, 4GB flat, and read/execute, and + * the data segments are 0x18, 4GB flat, and read/write. + * U-boot is setting them up that way for itself in + * arch/i386/cpu/cpu.c. + */ + __asm__ __volatile__ ( + "movl $0, %%ebp\n" + "cli\n" + "jmp *%[kernel_entry]\n" + :: [kernel_entry]"a"(load_address), + [boot_params] "S"(setup_base), + "b"(0), "D"(0) + ); + } + + /* We can't get to here */ + return -EFAULT; +} + /* Subcommand: GO */ static int boot_jump_linux(bootm_headers_t *images) { debug("## Transferring control to Linux (at address %08lx, kernel %08lx) ...\n", images->ep, images->os.load); - boot_zimage((struct boot_params *)images->ep, (void *)images->os.load); - /* does not return */ - - return 1; + return boot_linux_kernel(images->ep, images->os.load, + images->os.arch == IH_ARCH_X86_64); } int do_bootm_linux(int flag, int argc, char * const argv[], @@ -161,10 +197,8 @@ int do_bootm_linux(int flag, int argc, char * const argv[], if (flag & BOOTM_STATE_OS_PREP) return boot_prep_linux(images); - if (flag & BOOTM_STATE_OS_GO) { - boot_jump_linux(images); - return 0; - } + if (flag & BOOTM_STATE_OS_GO) + return boot_jump_linux(images); return boot_jump_linux(images); } diff --git a/arch/x86/lib/physmem.c b/arch/x86/lib/physmem.c index b57b2c30fe..c3c709ec07 100644 --- a/arch/x86/lib/physmem.c +++ b/arch/x86/lib/physmem.c @@ -10,6 +10,7 @@ #include <common.h> #include <physmem.h> +#include <asm/cpu.h> #include <linux/compiler.h> DECLARE_GLOBAL_DATA_PTR; @@ -112,41 +113,13 @@ static void x86_phys_enter_paging(void) x86_phys_map_page(page_addr, page_addr, 0); } - /* Turn on paging */ - __asm__ __volatile__( - /* Load the page table address */ - "movl %0, %%cr3\n\t" - /* Enable pae */ - "movl %%cr4, %%eax\n\t" - "orl $0x00000020, %%eax\n\t" - "movl %%eax, %%cr4\n\t" - /* Enable paging */ - "movl %%cr0, %%eax\n\t" - "orl $0x80000000, %%eax\n\t" - "movl %%eax, %%cr0\n\t" - : - : "r" (pdpt) - : "eax" - ); + cpu_enable_paging_pae((ulong)pdpt); } /* Disable paging and PAE mode. */ static void x86_phys_exit_paging(void) { - /* Turn off paging */ - __asm__ __volatile__ ( - /* Disable paging */ - "movl %%cr0, %%eax\n\t" - "andl $0x7fffffff, %%eax\n\t" - "movl %%eax, %%cr0\n\t" - /* Disable pae */ - "movl %%cr4, %%eax\n\t" - "andl $0xffffffdf, %%eax\n\t" - "movl %%eax, %%cr4\n\t" - : - : - : "eax" - ); + cpu_disable_paging_pae(); } /* diff --git a/arch/x86/lib/zimage.c b/arch/x86/lib/zimage.c index b1902834e8..566b048c88 100644 --- a/arch/x86/lib/zimage.c +++ b/arch/x86/lib/zimage.c @@ -103,7 +103,7 @@ static int get_boot_protocol(struct setup_header *hdr) } struct boot_params *load_zimage(char *image, unsigned long kernel_size, - void **load_address) + ulong *load_addressp) { struct boot_params *setup_base; int setup_size; @@ -155,9 +155,9 @@ struct boot_params *load_zimage(char *image, unsigned long kernel_size, /* Determine load address */ if (big_image) - *load_address = (void *)BZIMAGE_LOAD_ADDR; + *load_addressp = BZIMAGE_LOAD_ADDR; else - *load_address = (void *)ZIMAGE_LOAD_ADDR; + *load_addressp = ZIMAGE_LOAD_ADDR; printf("Building boot_params at 0x%8.8lx\n", (ulong)setup_base); memset(setup_base, 0, sizeof(*setup_base)); @@ -204,10 +204,10 @@ struct boot_params *load_zimage(char *image, unsigned long kernel_size, return 0; } - printf("Loading %s at address %p (%ld bytes)\n", - big_image ? "bzImage" : "zImage", *load_address, kernel_size); + printf("Loading %s at address %lx (%ld bytes)\n", + big_image ? "bzImage" : "zImage", *load_addressp, kernel_size); - memmove(*load_address, image + setup_size, kernel_size); + memmove((void *)*load_addressp, image + setup_size, kernel_size); return setup_base; } @@ -261,30 +261,6 @@ int setup_zimage(struct boot_params *setup_base, char *cmd_line, int auto_boot, return 0; } -void boot_zimage(void *setup_base, void *load_address) -{ - bootm_announce_and_cleanup(); - -#ifdef CONFIG_SYS_COREBOOT - timestamp_add_now(TS_U_BOOT_START_KERNEL); -#endif - /* - * Set %ebx, %ebp, and %edi to 0, %esi to point to the boot_params - * structure, and then jump to the kernel. We assume that %cs is - * 0x10, 4GB flat, and read/execute, and the data segments are 0x18, - * 4GB flat, and read/write. U-boot is setting them up that way for - * itself in arch/i386/cpu/cpu.c. - */ - __asm__ __volatile__ ( - "movl $0, %%ebp\n" - "cli\n" - "jmp *%[kernel_entry]\n" - :: [kernel_entry]"a"(load_address), - [boot_params] "S"(setup_base), - "b"(0), "D"(0) - ); -} - void setup_pcat_compatibility(void) __attribute__((weak, alias("__setup_pcat_compatibility"))); @@ -296,7 +272,7 @@ int do_zboot(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) { struct boot_params *base_ptr; void *bzImage_addr = NULL; - void *load_address; + ulong load_address; char *s; ulong bzImage_size = 0; ulong initrd_addr = 0; @@ -331,20 +307,17 @@ int do_zboot(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) base_ptr = load_zimage(bzImage_addr, bzImage_size, &load_address); if (!base_ptr) { - printf("## Kernel loading failed ...\n"); + puts("## Kernel loading failed ...\n"); return -1; } if (setup_zimage(base_ptr, (char *)base_ptr + COMMAND_LINE_OFFSET, 0, initrd_addr, initrd_size)) { - printf("Setting up boot parameters failed ...\n"); + puts("Setting up boot parameters failed ...\n"); return -1; } /* we assume that the kernel is in place */ - boot_zimage(base_ptr, load_address); - /* does not return */ - - return -1; + return boot_linux_kernel((ulong)base_ptr, load_address, false); } U_BOOT_CMD( |