diff options
| author | Daisuke Nojiri <dnojiri@chromium.org> | 2015-02-17 13:43:35 -0800 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2015-04-17 10:19:59 +0200 |
| commit | e5d5942e153a54e192644300e8dd94d53bdc2583 (patch) | |
| tree | 2dd74653cb5919481810536ebe835297dbc8f95e /src/soc | |
| parent | 128de62e8c433b7f9158d53364439d06fa648765 (diff) | |
cygnus: enable mmu
this is not only for speed but also preventing the cpu from crashing.
the cpu is not happy when cache is cleaned without mmu turned on.
BUG=chrome-os-partner:36691
BRANCH=broadcom-firmware
TEST=boot purin to romstage.
Change-Id: I2445dcc2729798c4fc56fa191cbc8471ef708d08
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 9e35c925b75213e1d35bf191f22c39aaf1726eeb
Original-Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Original-Change-Id: Icaf8c506df258edb99413949e6e3089a2b1a91af
Original-Reviewed-on: https://chrome-internal-review.googlesource.com/199388
Original-Reviewed-by: Julius Werner <jwerner@chromium.org>
Original-Commit-Queue: Daisuke Nojiri <dnojiri@google.com>
Original-Tested-by: Daisuke Nojiri <dnojiri@google.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/251306
Reviewed-on: http://review.coreboot.org/9768
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <edward.ocallaghan@koparo.com>
Diffstat (limited to 'src/soc')
| -rw-r--r-- | src/soc/broadcom/cygnus/bootblock.c | 13 | ||||
| -rw-r--r-- | src/soc/broadcom/cygnus/include/soc/memlayout.ld | 1 |
2 files changed, 11 insertions, 3 deletions
diff --git a/src/soc/broadcom/cygnus/bootblock.c b/src/soc/broadcom/cygnus/bootblock.c index 37edf7f771..3c6d242d76 100644 --- a/src/soc/broadcom/cygnus/bootblock.c +++ b/src/soc/broadcom/cygnus/bootblock.c @@ -17,13 +17,20 @@ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ +#include <arch/cache.h> #include <bootblock_common.h> -#include <console/console.h> +#include <stddef.h> +#include <symbols.h> void bootblock_soc_init(void) { /* - * typically, this is the place where mmu is initialized to enable - * cache. it helps speed up vboot verification. + * not only for speed but for preventing the cpu from crashing. + * the cpu is not happy when cache is cleaned without mmu turned on. */ + mmu_init(); + mmu_config_range(0, 4096, DCACHE_OFF); + mmu_config_range_kb((uintptr_t)_sram/KiB, _sram_size/KiB, + DCACHE_WRITETHROUGH); + dcache_mmu_enable(); } diff --git a/src/soc/broadcom/cygnus/include/soc/memlayout.ld b/src/soc/broadcom/cygnus/include/soc/memlayout.ld index c48c1bc221..cfa50a544f 100644 --- a/src/soc/broadcom/cygnus/include/soc/memlayout.ld +++ b/src/soc/broadcom/cygnus/include/soc/memlayout.ld @@ -31,6 +31,7 @@ SECTIONS SRAM_START(0x02000000) REGION(reserved_for_system_status, 0x02000000, 4K, 4) TTB(0x02004000, 16K) /* must be aligned to 16K */ + TTB_SUBTABLES(0x02008000, 1K) REGION(reserved_for_maskrom, 0x02009400, 4K, 4) BOOTBLOCK(0x0200A440, 18K) PRERAM_CBMEM_CONSOLE(0x0200F000, 4K) |