diff options
| author | David Hendricks <dhendrix@chromium.org> | 2013-01-17 15:07:35 -0800 |
|---|---|---|
| committer | Ronald G. Minnich <rminnich@gmail.com> | 2013-01-18 00:26:53 +0100 |
| commit | fba42a793a67d8910b4ab7fdfb386bcda9896d13 (patch) | |
| tree | 44edd08ae28e4260ad1cdbad4cccb40be4f840ce /src/cpu/samsung/exynos5250 | |
| parent | 1c706dc85830a1d91c7ff7c99ac48efd8d085613 (diff) | |
Snow bootblock (bloated/debug version)
This is the bloated Snow bootblock which includes:
- SPI driver
- UART, including requisite I2C, Maxim PMIC, and clock config code.
- Adjustments for magic offsets (id section, stack pointer address)
This is just a temporary solution until we have romstage loading.
Once that happens, we'll rip out all but the code necessary for
copying SPI ROM content into SRAM.
Change-Id: I2a11e272eb9b6f626b5d9783eabb4a720a1d06be
Signed-off-by: David Hendricks <dhendrix@chromium.org>
Reviewed-on: http://review.coreboot.org/2170
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Diffstat (limited to 'src/cpu/samsung/exynos5250')
| -rw-r--r-- | src/cpu/samsung/exynos5250/Kconfig | 2 | ||||
| -rw-r--r-- | src/cpu/samsung/exynos5250/bootblock.c | 26 |
2 files changed, 18 insertions, 10 deletions
diff --git a/src/cpu/samsung/exynos5250/Kconfig b/src/cpu/samsung/exynos5250/Kconfig index 3d66c77440..206df9260b 100644 --- a/src/cpu/samsung/exynos5250/Kconfig +++ b/src/cpu/samsung/exynos5250/Kconfig @@ -45,7 +45,7 @@ config IRAM_TOP config SYS_INIT_SP_ADDR hex - default 0x0204F800 + default 0x02058000 config IRAM_STACK hex diff --git a/src/cpu/samsung/exynos5250/bootblock.c b/src/cpu/samsung/exynos5250/bootblock.c index 58d0919f02..0d65676bb5 100644 --- a/src/cpu/samsung/exynos5250/bootblock.c +++ b/src/cpu/samsung/exynos5250/bootblock.c @@ -17,16 +17,24 @@ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ +#if 0 +/* + * Set/clear program flow prediction and return the previous state. + */ +static int config_branch_prediction(int set_cr_z) +{ + unsigned int cr; + + /* System Control Register: 11th bit Z Branch prediction enable */ + cr = get_cr(); + set_cr(set_cr_z ? cr | CR_Z : cr & ~CR_Z); + + return cr & CR_Z; +} +#endif + void bootblock_cpu_init(void); void bootblock_cpu_init(void) { - /* - * FIXME: this is a stub for now. It should eventually copy - * romstage data (and maybe more) from SPI to SRAM. - */ -#if 0 - volatile unsigned long *addr = (unsigned long *)0x1004330c; - *addr |= 0x100; - while (1) ; -#endif + /* FIXME: this is a stub for now */ } |