diff options
Diffstat (limited to 'src/cpu/intel/model_6fx/cache_as_ram_disable.c')
| -rw-r--r-- | src/cpu/intel/model_6fx/cache_as_ram_disable.c | 60 |
1 files changed, 27 insertions, 33 deletions
diff --git a/src/cpu/intel/model_6fx/cache_as_ram_disable.c b/src/cpu/intel/model_6fx/cache_as_ram_disable.c index b95447da73..a22978e051 100644 --- a/src/cpu/intel/model_6fx/cache_as_ram_disable.c +++ b/src/cpu/intel/model_6fx/cache_as_ram_disable.c @@ -1,7 +1,7 @@ /* * This file is part of the coreboot project. * - * Copyright (C) 2007-2008 coresystems GmbH + * Copyright (C) 2007-2009 coresystems GmbH * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as @@ -53,24 +53,20 @@ void stage1_main(unsigned long bist) /* No servicable parts below this line .. */ - { - /* Check value of esp to verify if we have enough rom for stack in Cache as RAM */ - unsigned v_esp; - __asm__ volatile ( - "movl %%esp, %0\n\t" - : "=a" (v_esp) - ); - printk_spew("v_esp=%08x\r\n", v_esp); - } +#if CAR_DEBUG + /* Check value of esp to verify if we have enough rom for stack in Cache as RAM */ + unsigned v_esp; + __asm__ volatile ( + "movl %%esp, %0\n" + : "=a" (v_esp) + ); + printk_spew("v_esp=%08x\n", v_esp); +#endif cpu_reset_x: - printk_spew("cpu_reset = %08x\r\n",cpu_reset); - - if(cpu_reset == 0) { - print_spew("Clearing initial memory region: "); - } - print_spew("No cache as ram now - "); + printk_spew("cpu_reset = %08x\n", cpu_reset); + printk_spew("No cache as ram now - "); /* store cpu_reset to ebx */ __asm__ volatile ( @@ -78,19 +74,22 @@ cpu_reset_x: ::"a" (cpu_reset) ); - if(cpu_reset==0) { -#define CLEAR_FIRST_1M_RAM 1 -#include "cache_as_ram_post.c" - } else { #undef CLEAR_FIRST_1M_RAM #include "cache_as_ram_post.c" - } + + /* For now: use rambase + 1MB - 64K (counting downwards) as stack. This + * makes sure that we stay completely within the 1M of memory we + * preserve with the memcpy above. + */ + +#ifndef HIGH_MEMORY_SAVE +#define HIGH_MEMORY_SAVE ( (1024 - 64) * 1024 ) +#endif __asm__ volatile ( - /* set new esp */ /* before CONFIG_RAMBASE */ - "subl %0, %%ebp\n\t" - "subl %0, %%esp\n\t" - ::"a"( (CONFIG_DCACHE_RAM_BASE + CONFIG_DCACHE_RAM_SIZE)- CONFIG_RAMBASE ) + "movl %0, %%ebp\n" + "movl %0, %%esp\n" + :: "a" (CONFIG_RAMBASE + HIGH_MEMORY_SAVE) ); { @@ -98,19 +97,14 @@ cpu_reset_x: /* get back cpu_reset from ebx */ __asm__ volatile ( - "movl %%ebx, %0\n\t" + "movl %%ebx, %0\n" :"=a" (new_cpu_reset) ); -#ifdef DEACTIVATE_CAR - print_debug("Deactivating CAR"); -#include DEACTIVATE_CAR_FILE - print_debug(" - Done.\r\n"); -#endif /* Copy and execute coreboot_ram */ copy_and_run(new_cpu_reset); - /* We will not return */ } - print_debug("sorry. parachute did not open.\r\n"); + /* We will not return */ + printk_debug("sorry. parachute did not open.\n"); } |