diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/cpu/cpu.c | 4 | ||||
| -rw-r--r-- | arch/x86/cpu/start.S | 95 |
2 files changed, 16 insertions, 83 deletions
diff --git a/arch/x86/cpu/cpu.c b/arch/x86/cpu/cpu.c index 4f57145..1b76ca1 100644 --- a/arch/x86/cpu/cpu.c +++ b/arch/x86/cpu/cpu.c @@ -136,8 +136,10 @@ static void load_gdt(const u64 *boot_gdt, u16 num_entries) asm volatile("lgdtl %0\n" : : "m" (gdt)); } -void setup_gdt(gd_t *new_gd, u64 *gdt_addr) +void arch_setup_gd(gd_t *new_gd) { + u64 *gdt_addr; + gdt_addr = new_gd->arch.gdt; /* CS: code, read/execute, 4 GB, base 0 */ diff --git a/arch/x86/cpu/start.S b/arch/x86/cpu/start.S index 313fa3f..e94ddc4 100644 --- a/arch/x86/cpu/start.S +++ b/arch/x86/cpu/start.S @@ -104,8 +104,7 @@ car_init_ret: * * top-> CONFIG_SYS_CAR_ADDR + CONFIG_SYS_CAR_SIZE * MRC area - * global_data - * x86 global descriptor table + * global_data with x86 global descriptor table * early malloc area * stack * bottom-> CONFIG_SYS_CAR_ADDR @@ -120,13 +119,10 @@ car_init_ret: * and esi holds the HOB list address returned by the FSP. */ #endif - - /* Reserve space on stack for global data */ - subl $GENERATED_GBL_DATA_SIZE, %esp - - /* Align global data to 16-byte boundary */ - andl $0xfffffff0, %esp - post_code(POST_START_STACK) + /* Set up global data */ + mov %esp, %eax + call board_init_f_mem + mov %eax, %esp /* * Debug UART is available here although it may not be plumbed out @@ -137,56 +133,21 @@ car_init_ret: * call printch */ - /* Zero the global data since it won't happen later */ - xorl %eax, %eax - movl $GENERATED_GBL_DATA_SIZE, %ecx - movl %esp, %edi - rep stosb - + /* Get address of global_data */ + mov %fs:0, %edx #ifdef CONFIG_HAVE_FSP + /* Store the HOB list if we have one */ test %esi, %esi jz skip_hob - - /* Store HOB list */ - movl %esp, %edx - addl $GD_HOB_LIST, %edx - movl %esi, (%edx) + movl %esi, GD_HOB_LIST(%edx) skip_hob: #else /* Store table pointer */ - movl %esp, %edx - addl $GD_TABLE, %edx - movl %esi, (%edx) + movl %esi, GD_TABLE(%edx) #endif - - /* Setup first parameter to setup_gdt, pointer to global_data */ - movl %esp, %eax - - /* Reserve space for global descriptor table */ - subl $X86_GDT_SIZE, %esp - - /* Align temporary global descriptor table to 16-byte boundary */ - andl $0xfffffff0, %esp - movl %esp, %ecx - -#if defined(CONFIG_SYS_MALLOC_F_LEN) - /* Set up the pre-relocation malloc pool */ - subl $CONFIG_SYS_MALLOC_F_LEN, %esp - movl %eax, %edx - addl $GD_MALLOC_BASE, %edx - movl %esp, (%edx) -#endif - /* Store BIST into global_data */ - movl %eax, %edx - addl $GD_BIST, %edx - movl %ebp, (%edx) - - /* Set second parameter to setup_gdt() */ - movl %ecx, %edx - - /* Setup global descriptor table so gd->xyz works */ - call setup_gdt + /* Store BIST */ + movl %ebp, GD_BIST(%edx) /* Set parameter to board_init_f() to boot flags */ post_code(POST_START_DONE) @@ -213,37 +174,7 @@ board_init_f_r_trampoline: /* Stack grows down from top of SDRAM */ movl %eax, %esp - /* Reserve space on stack for global data */ - subl $GENERATED_GBL_DATA_SIZE, %esp - - /* Align global data to 16-byte boundary */ - andl $0xfffffff0, %esp - - /* Setup first parameter to memcpy() and setup_gdt() */ - movl %esp, %eax - - /* Setup second parameter to memcpy() */ - fs movl 0, %edx - - /* Set third parameter to memcpy() */ - movl $GENERATED_GBL_DATA_SIZE, %ecx - - /* Copy global data from CAR to SDRAM stack */ - call memcpy - - /* Reserve space for global descriptor table */ - subl $X86_GDT_SIZE, %esp - - /* Align global descriptor table to 16-byte boundary */ - andl $0xfffffff0, %esp - - /* Set second parameter to setup_gdt() */ - movl %esp, %edx - - /* Setup global descriptor table so gd->xyz works */ - call setup_gdt - - /* Set if we need to disable CAR */ + /* See if we need to disable CAR */ .weak car_uninit movl $car_uninit, %eax cmpl $0, %eax |