Replace clear_memory with memset.

Replace set_init_ram_access with the call to set_var_mtrr.
Remove unused #include statments.

Signed-off-by: Myles Watson <mylesgw@gmail.com>
Acked-by: Patrick Georgi <patrick.georgi@coresystems.de>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5201 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

19 files changed, 11 insertions, 60 deletions

diff --git a/src/cpu/amd/car/clear_init_ram.c b/src/cpu/amd/car/clear_init_ram.c
deleted file mode 100644
index 624e0fea83..0000000000
--- a/src/cpu/amd/car/clear_init_ram.c
+++ /dev/null
@@ -1,23 +0,0 @@
-/* by yhlu 6.2005 */
-/* be warned, this file will be used core 0/node 0 only */
-
-static void __attribute__((noinline)) clear_init_ram(void)
-{
-	// gcc 3.4.5 will inline the copy_and_run and clear_init_ram in post_cache_as_ram
-	// will reuse %edi as 0 from clear_memory for copy_and_run part, actually it is increased already
-	// so noline clear_init_ram
-
-#if CONFIG_HAVE_ACPI_RESUME == 1
-	/* clear only coreboot used region of memory. Note: this may break ECC enabled boards */
-	clear_memory( CONFIG_RAMBASE, (CONFIG_RAMTOP) - CONFIG_RAMBASE - CONFIG_DCACHE_RAM_SIZE);
-#else
-        clear_memory(0, ((CONFIG_RAMTOP) - CONFIG_DCACHE_RAM_SIZE));
-#endif
-}
-
-/* be warned, this file will be used by core other than core 0/node 0 or core0/node0 when cpu_reset*/
-static void set_init_ram_access(void)
-{
-	set_var_mtrr(0, 0x00000000, CONFIG_RAMTOP, MTRR_TYPE_WRBACK);
-}
-
diff --git a/src/cpu/amd/car/post_cache_as_ram.c b/src/cpu/amd/car/post_cache_as_ram.c
index 5c085cd6d8..10194b9659 100644
--- a/src/cpu/amd/car/post_cache_as_ram.c
+++ b/src/cpu/amd/car/post_cache_as_ram.c
@@ -3,8 +3,6 @@
  */
 #include "cpu/amd/car/disable_cache_as_ram.c"
 
-#include "cpu/amd/car/clear_init_ram.c"
-
 static inline void print_debug_pcar(const char *strval, uint32_t val)
 {
         printk_debug("%s%08x\r\n", strval, val);
@@ -64,7 +62,8 @@ static void post_cache_as_ram(void)
         #error "You need to set CONFIG_RAMTOP greater than 1M"
 #endif
 	
-	set_init_ram_access(); /* So we can access RAM from [1M, CONFIG_RAMTOP) */
+	/* So we can access RAM from [1M, CONFIG_RAMTOP) */
+	set_var_mtrr(0, 0x00000000, CONFIG_RAMTOP, MTRR_TYPE_WRBACK);
 
 //	dump_mem(CONFIG_DCACHE_RAM_BASE+CONFIG_DCACHE_RAM_SIZE-0x8000, CONFIG_DCACHE_RAM_BASE+CONFIG_DCACHE_RAM_SIZE-0x7c00);
 	print_debug("Copying data from cache to RAM -- switching to use RAM as stack... ");
@@ -94,7 +93,12 @@ static void post_cache_as_ram(void)
 	disable_cache_as_ram_bsp();  
 
         print_debug("Clearing initial memory region: ");
-        clear_init_ram(); //except the range from [(CONFIG_RAMTOP) - CONFIG_DCACHE_RAM_SIZE, (CONFIG_RAMTOP))
+#if CONFIG_HAVE_ACPI_RESUME == 1
+	/* clear only coreboot used region of memory. Note: this may break ECC enabled boards */
+	memset((void*) CONFIG_RAMBASE, (CONFIG_RAMTOP) - CONFIG_RAMBASE - CONFIG_DCACHE_RAM_SIZE, 0);
+#else
+        memset((void*)0, ((CONFIG_RAMTOP) - CONFIG_DCACHE_RAM_SIZE), 0);
+#endif
         print_debug("Done\r\n");
 
 //	dump_mem((CONFIG_RAMTOP) - 0x8000, (CONFIG_RAMTOP) - 0x7c00);
diff --git a/src/cpu/amd/model_10xxx/init_cpus.c b/src/cpu/amd/model_10xxx/init_cpus.c
index 822e362a74..c43887f380 100644
--- a/src/cpu/amd/model_10xxx/init_cpus.c
+++ b/src/cpu/amd/model_10xxx/init_cpus.c
@@ -421,7 +421,7 @@ static u32 init_cpus(u32 cpu_init_detectedx)
 		 */
 		//wait_till_sysinfo_in_ram();
 
-		set_init_ram_access();
+		set_var_mtrr(0, 0x00000000, CONFIG_RAMTOP, MTRR_TYPE_WRBACK);
 
 		STOP_CAR_AND_CPU();
 		printk_debug("\nAP %02x should be halted but you are reading this....\n", apicid);
diff --git a/src/cpu/amd/model_10xxx/model_10xxx_init.c b/src/cpu/amd/model_10xxx/model_10xxx_init.c
index daf3eceaa4..6ef1f42471 100644
--- a/src/cpu/amd/model_10xxx/model_10xxx_init.c
+++ b/src/cpu/amd/model_10xxx/model_10xxx_init.c
@@ -34,7 +34,6 @@
 #include <cpu/cpu.h>
 #include <cpu/x86/cache.h>
 #include <cpu/x86/mtrr.h>
-#include <cpu/x86/mem.h>
 #include <cpu/amd/quadcore.h>
 #include <cpu/amd/model_10xxx_msr.h>
 
diff --git a/src/cpu/amd/model_fxx/init_cpus.c b/src/cpu/amd/model_fxx/init_cpus.c
index 483399c0c0..510c803ca9 100644
--- a/src/cpu/amd/model_fxx/init_cpus.c
+++ b/src/cpu/amd/model_fxx/init_cpus.c
@@ -317,7 +317,7 @@ static unsigned init_cpus(unsigned cpu_init_detectedx)
 			        print_initcpu8("while waiting for BSP signal to STOP, timeout in ap ", apicid);
 			}
                         lapic_write(LAPIC_MSG_REG, (apicid<<24) | 0x44); // bsp can not check it before stop_this_cpu
-                        set_init_ram_access();
+			set_var_mtrr(0, 0x00000000, CONFIG_RAMTOP, MTRR_TYPE_WRBACK);
 	#if CONFIG_MEM_TRAIN_SEQ == 1
 			train_ram_on_node(id.nodeid, id.coreid, sysinfo,
 					  (unsigned) STOP_CAR_AND_CPU);
diff --git a/src/cpu/amd/model_fxx/model_fxx_init.c b/src/cpu/amd/model_fxx/model_fxx_init.c
index 2d72618448..b4a981bcb3 100644
--- a/src/cpu/amd/model_fxx/model_fxx_init.c
+++ b/src/cpu/amd/model_fxx/model_fxx_init.c
@@ -24,7 +24,6 @@
 #include <cpu/cpu.h>
 #include <cpu/x86/cache.h>
 #include <cpu/x86/mtrr.h>
-#include <cpu/x86/mem.h>
 
 #include <cpu/amd/dualcore.h>
 
@@ -238,7 +237,7 @@ static inline void clear_2M_ram(unsigned long basek, struct mtrr_state *mtrr_sta
 
                 /* clear memory 2M (limitk - basek) */
                 addr = (void *)(((uint32_t)addr) | ((basek & 0x7ff) << 10));
-                clear_memory(addr, size);
+                memset(addr, size, 0);
 }
 
 static void init_ecc_memory(unsigned node_id)
diff --git a/src/include/cpu/x86/mem.h b/src/include/cpu/x86/mem.h
deleted file mode 100644
index 530c653277..0000000000
--- a/src/include/cpu/x86/mem.h
+++ /dev/null
@@ -1,16 +0,0 @@
-#ifndef CPU_X86_MEM_H
-#define CPU_X86_MEM_H
-
-/* Optimized generic x86 assembly for clearing memory */
-static inline void clear_memory(void *addr, unsigned long size)
-{
-        asm volatile(
-                "cld \n\t"
-                "rep; stosl\n\t"
-                : /* No outputs */
-                : "a" (0), "D" (addr), "c" (size>>2)
-                );
-
-}
-
-#endif /* CPU_X86_MEM_H */
diff --git a/src/mainboard/amd/serengeti_cheetah_fam10/romstage.c b/src/mainboard/amd/serengeti_cheetah_fam10/romstage.c
index 82a404b50b..0546a6ddf3 100644
--- a/src/mainboard/amd/serengeti_cheetah_fam10/romstage.c
+++ b/src/mainboard/amd/serengeti_cheetah_fam10/romstage.c
@@ -130,7 +130,6 @@ static int spd_read_byte(u32 device, u32 address)
 #include "northbridge/amd/amdfam10/amdfam10.h"
 #include "northbridge/amd/amdht/ht_wrapper.c"
 
-#include "include/cpu/x86/mem.h"
 #include "northbridge/amd/amdfam10/raminit_sysinfo_in_ram.c"
 #include "northbridge/amd/amdfam10/raminit_amdmct.c"
 #include "northbridge/amd/amdfam10/amdfam10_pci.c"
diff --git a/src/mainboard/msi/ms9652_fam10/romstage.c b/src/mainboard/msi/ms9652_fam10/romstage.c
index f19147f118..60a1e14f1d 100644
--- a/src/mainboard/msi/ms9652_fam10/romstage.c
+++ b/src/mainboard/msi/ms9652_fam10/romstage.c
@@ -110,7 +110,6 @@ static inline int spd_read_byte(unsigned device, unsigned address)
 #include "northbridge/amd/amdfam10/amdfam10.h"
 #include "northbridge/amd/amdht/ht_wrapper.c"
 
-#include "include/cpu/x86/mem.h"
 #include "northbridge/amd/amdfam10/raminit_sysinfo_in_ram.c"
 #include "northbridge/amd/amdfam10/raminit_amdmct.c"
 #include "northbridge/amd/amdfam10/amdfam10_pci.c"
diff --git a/src/mainboard/supermicro/h8dmr_fam10/romstage.c b/src/mainboard/supermicro/h8dmr_fam10/romstage.c
index 4ebc47f6a0..9d870f0c8d 100644
--- a/src/mainboard/supermicro/h8dmr_fam10/romstage.c
+++ b/src/mainboard/supermicro/h8dmr_fam10/romstage.c
@@ -108,7 +108,6 @@ static inline int spd_read_byte(unsigned device, unsigned address)
 #include "northbridge/amd/amdfam10/amdfam10.h"
 #include "northbridge/amd/amdht/ht_wrapper.c"
 
-#include "include/cpu/x86/mem.h"
 #include "northbridge/amd/amdfam10/raminit_sysinfo_in_ram.c"
 #include "northbridge/amd/amdfam10/raminit_amdmct.c"
 #include "northbridge/amd/amdfam10/amdfam10_pci.c"
diff --git a/src/mainboard/supermicro/h8qme_fam10/romstage.c b/src/mainboard/supermicro/h8qme_fam10/romstage.c
index 749527fce9..1a19a14648 100644
--- a/src/mainboard/supermicro/h8qme_fam10/romstage.c
+++ b/src/mainboard/supermicro/h8qme_fam10/romstage.c
@@ -108,7 +108,6 @@ static inline int spd_read_byte(unsigned device, unsigned address)
 #include "northbridge/amd/amdfam10/amdfam10.h"
 #include "northbridge/amd/amdht/ht_wrapper.c"
 
-#include "include/cpu/x86/mem.h"
 #include "northbridge/amd/amdfam10/raminit_sysinfo_in_ram.c"
 #include "northbridge/amd/amdfam10/raminit_amdmct.c"
 #include "northbridge/amd/amdfam10/amdfam10_pci.c"
diff --git a/src/mainboard/tyan/s2912_fam10/romstage.c b/src/mainboard/tyan/s2912_fam10/romstage.c
index 45d0d9401a..337750b66e 100644
--- a/src/mainboard/tyan/s2912_fam10/romstage.c
+++ b/src/mainboard/tyan/s2912_fam10/romstage.c
@@ -110,7 +110,6 @@ static inline int spd_read_byte(unsigned device, unsigned address)
 #include "northbridge/amd/amdfam10/amdfam10.h"
 #include "northbridge/amd/amdht/ht_wrapper.c"
 
-#include "include/cpu/x86/mem.h"
 #include "northbridge/amd/amdfam10/raminit_sysinfo_in_ram.c"
 #include "northbridge/amd/amdfam10/raminit_amdmct.c"
 #include "northbridge/amd/amdfam10/amdfam10_pci.c"
diff --git a/src/northbridge/amd/amdk8/raminit.c b/src/northbridge/amd/amdk8/raminit.c
index 22b672f0e9..0e27a16991 100644
--- a/src/northbridge/amd/amdk8/raminit.c
+++ b/src/northbridge/amd/amdk8/raminit.c
@@ -4,7 +4,6 @@
 	2005.02 yhlu add E0 memory hole support
 */
 
-#include <cpu/x86/mem.h>
 #include <cpu/x86/cache.h>
 #include <cpu/x86/mtrr.h>
 #include <stdlib.h>
diff --git a/src/northbridge/amd/amdk8/raminit_f.c b/src/northbridge/amd/amdk8/raminit_f.c
index aaf60a85a1..601c035dd8 100644
--- a/src/northbridge/amd/amdk8/raminit_f.c
+++ b/src/northbridge/amd/amdk8/raminit_f.c
@@ -20,7 +20,6 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
 */
 
-#include <cpu/x86/mem.h>
 #include <cpu/x86/cache.h>
 #include <cpu/x86/mtrr.h>
 #include <cpu/x86/tsc.h>
diff --git a/src/northbridge/intel/e7520/raminit.c b/src/northbridge/intel/e7520/raminit.c
index 27ed477d9a..bb4ebbdfe3 100644
--- a/src/northbridge/intel/e7520/raminit.c
+++ b/src/northbridge/intel/e7520/raminit.c
@@ -18,7 +18,6 @@
  *
  */
 
-#include <cpu/x86/mem.h>
 #include <cpu/x86/mtrr.h>
 #include <cpu/x86/cache.h>
 #include <stdlib.h>
diff --git a/src/northbridge/intel/e7525/raminit.c b/src/northbridge/intel/e7525/raminit.c
index 313dc0f930..4aaa26480d 100644
--- a/src/northbridge/intel/e7525/raminit.c
+++ b/src/northbridge/intel/e7525/raminit.c
@@ -18,7 +18,6 @@
  *
  */
 
-#include <cpu/x86/mem.h>
 #include <cpu/x86/mtrr.h>
 #include <cpu/x86/cache.h>
 #include <stdlib.h>
diff --git a/src/northbridge/intel/i3100/raminit.c b/src/northbridge/intel/i3100/raminit.c
index 5aa4d9ded6..76475ce235 100644
--- a/src/northbridge/intel/i3100/raminit.c
+++ b/src/northbridge/intel/i3100/raminit.c
@@ -19,7 +19,6 @@
  *
  */
 
-#include <cpu/x86/mem.h>
 #include <cpu/x86/mtrr.h>
 #include <cpu/x86/cache.h>
 #include <stdlib.h>
diff --git a/src/northbridge/intel/i3100/raminit_ep80579.c b/src/northbridge/intel/i3100/raminit_ep80579.c
index 5e51361898..9ad778bf13 100644
--- a/src/northbridge/intel/i3100/raminit_ep80579.c
+++ b/src/northbridge/intel/i3100/raminit_ep80579.c
@@ -19,7 +19,6 @@
  *
  */
 
-#include <cpu/x86/mem.h>
 #include <cpu/x86/mtrr.h>
 #include <cpu/x86/cache.h>
 #include "raminit_ep80579.h"
diff --git a/src/northbridge/intel/i945/raminit.c b/src/northbridge/intel/i945/raminit.c
index f65ccfaf42..3f73549eb6 100644
--- a/src/northbridge/intel/i945/raminit.c
+++ b/src/northbridge/intel/i945/raminit.c
@@ -17,7 +17,6 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  */
 
-#include <cpu/x86/mem.h>
 #include <cpu/x86/mtrr.h>
 #include <cpu/x86/cache.h>
 #include <spd.h>