amdk8/amdfam10: Use CAR_GLOBAL for sysinfo

This gets rid of the somewhat unstructured placement of AMD's
sysinfo structure in CAR.
We used to carve out some CAR space using a Kconfig variable,
and then put sysinfo there manually (by "virtue" of pointer magic).

Now it's a variable with the CAR_GLOBAL qualifier, and build
system magic.

For this, the following steps were done (but must happen together
since the intermediates won't build):
- Add new CAR_GLOBAL sysinfo_car
- point all sysinfo pointers to sysinfo_car instead of GLOBAL_VAR
- remove DCACHE_RAM_GLOBAL_VAR_SIZE
  - from CAR setup (no need to reserve the space)
  - commented out code (that was commented out for years)
  - only copy sizeof(sysinfo) into RAM after ram init, where
    before it copied the whole GLOBAL_VAR area.
  - from Kconfig

Change-Id: I3cbcccd883ca6751326c8e32afde2eb0c91229ed
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/1887
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: Marc Jones <marcj303@gmail.com>

1 files changed, 0 insertions, 6 deletions

diff --git a/src/cpu/amd/car/post_cache_as_ram.c b/src/cpu/amd/car/post_cache_as_ram.c
index 2aa4f30..861948f 100644
--- a/src/cpu/amd/car/post_cache_as_ram.c
+++ b/src/cpu/amd/car/post_cache_as_ram.c
@@ -164,12 +164,6 @@ static void post_cache_as_ram(void)
 
 	set_sysinfo_in_ram(1); // So other core0 could start to train mem
 
-#if CONFIG_MEM_TRAIN_SEQ == 1
-//	struct sys_info *sysinfox = ((CONFIG_RAMTOP) - CONFIG_DCACHE_RAM_GLOBAL_VAR_SIZE);
-
-	// wait for ap memory to trained
-//	wait_all_core0_mem_trained(sysinfox); // moved to lapic_init_cpus.c
-#endif
 	/*copy and execute coreboot_ram */
 	copy_and_run(0);
 	/* We will not return */