diff options
| author | Che-Liang Chiou <clchiou@chromium.org> | 2011-07-02 17:27:28 +0800 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2011-08-29 10:58:44 -0700 |
| commit | 12f3d7fc17ee799dee85e37669de6a53abb10f88 (patch) | |
| tree | d79da41a42e724d144d176006ee5476f6f04ebab /arch/arm/include/asm/arch-tegra2 | |
| parent | d056165754bda579dd93cf12628e2a2afcc68709 (diff) | |
tegra2: logging whether it is a cold boot or not
The second stage firmware has to know the system is booted up after a
first stage u-boot.
BUG=chromium-os:17056
TEST=manual
1. Do cold boot
2. Then do a warm boot (run "go 0xe08000")
3. Meanwhile you should observe that _IS_TEGRA2_COLD_BOOT switches
from 0 to 1 (run "md.b" to dump memory content)
Change-Id: I70b155cb2be9566416dbe7ace255cae928f6fc93
Reviewed-on: http://gerrit.chromium.org/gerrit/3602
Reviewed-by: Che-Liang Chiou <clchiou@chromium.org>
Tested-by: Che-Liang Chiou <clchiou@chromium.org>
Diffstat (limited to 'arch/arm/include/asm/arch-tegra2')
| -rw-r--r-- | arch/arm/include/asm/arch-tegra2/clock.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-tegra2/clock.h b/arch/arm/include/asm/arch-tegra2/clock.h index 6c0587d4633..0050f88578d 100644 --- a/arch/arm/include/asm/arch-tegra2/clock.h +++ b/arch/arm/include/asm/arch-tegra2/clock.h @@ -348,6 +348,9 @@ unsigned clock_adjust_periph_pll_div(enum periph_id periph_id, */ unsigned clock_get_rate(enum clock_id clkid); +/* Return 1=cold boot; 0=not cold boot */ +int check_is_tegra2_cold_boot(void); + /* Initialize the clocks */ void clock_init(void); |