On 10/23/15 13:19, Krzysztof Kozlowski wrote: > Update the documentation about: > 1. Usage of PMU_SPARE2 register. > Bootloaders on Exynos542x-based boards often use the register > PMU_SPARE2 (0x908) in the same way as on Exynos3250: as a indicator > the secondary CPU was booted on. The bootloader will set this value > to non-zero, after sucessfull power up of secondary CPU. In the same > time this booted CPU will stuck (spin) waiting for software reset. > 2. Exynos542x entry address for secondary CPU boot up after system > suspend (with MCPM enabled and in non-secure mode). > > See arch/arm/mach-exynos/mcpm-exynos.c for source code. > > Signed-off-by: Krzysztof Kozlowski <k.kozlowski@xxxxxxxxxxx> > --- > Documentation/arm/Samsung/Bootloader-interface.txt | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) > > diff --git a/Documentation/arm/Samsung/Bootloader-interface.txt b/Documentation/arm/Samsung/Bootloader-interface.txt > index df8d4fb85939..ed494ac0beb2 100644 > --- a/Documentation/arm/Samsung/Bootloader-interface.txt > +++ b/Documentation/arm/Samsung/Bootloader-interface.txt > @@ -19,7 +19,7 @@ executing kernel. > Address: sysram_ns_base_addr > Offset Value Purpose > ============================================================================= > -0x08 exynos_cpu_resume_ns System suspend > +0x08 exynos_cpu_resume_ns, mcpm_entry_point System suspend > 0x0c 0x00000bad (Magic cookie) System suspend > 0x1c exynos4_secondary_startup Secondary CPU boot > 0x1c + 4*cpu exynos4_secondary_startup (Exynos4412) Secondary CPU boot > @@ -56,7 +56,8 @@ Offset Value Purpose > Address: pmu_base_addr > Offset Value Purpose > ============================================================================= > -0x0908 Non-zero (only Exynos3250) Secondary CPU boot up indicator > +0x0908 Non-zero Secondary CPU boot up indicator > + on Exynos3250 and Exynos542x > > > 4. Glossary Applied, thanks. - Kukjin -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
