Juha Yrjola <juha.yrjola@xxxxxxxxxxxxx> writes:
> The reboot mode can be communicated to a bootloader (or the
> kernel itself) with a scratchpad register. This functionality
> is especially useful, if userspace is allowed to change
> the reboot mode.
>
> Signed-off-by: Juha Yrjola <juha.yrjola@xxxxxxxxxxxxx>
Acked-by: Kevin Hilman <khilman@xxxxxxxxxxxxxxxxxxx>
> ---
> arch/arm/mach-omap2/prcm.c | 13 +++++++++++--
> 1 files changed, 11 insertions(+), 2 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/prcm.c b/arch/arm/mach-omap2/prcm.c
> index f945156..2f828cb 100644
> --- a/arch/arm/mach-omap2/prcm.c
> +++ b/arch/arm/mach-omap2/prcm.c
> @@ -43,9 +43,18 @@ void omap_prcm_arch_reset(char mode)
>
> if (cpu_is_omap24xx())
> prcm_offs = WKUP_MOD;
> - else if (cpu_is_omap34xx())
> + else if (cpu_is_omap34xx()) {
> + u32 l;
> +
> prcm_offs = OMAP3430_GR_MOD;
> - else
> + l = ('B' << 24) | ('M' << 16) | mode;
> + /* Reserve the first word in scratchpad for communicating
> + * with the boot ROM. A pointer to a data structure
> + * describing the boot process can be stored there,
> + * cf. OMAP34xx TRM, Initialization / Software Booting
> + * Configuration. */
> + omap_writel(l, OMAP343X_SCRATCHPAD + 4);
> + } else
> WARN_ON(1);
>
> prm_set_mod_reg_bits(OMAP_RST_DPLL3, prcm_offs, RM_RSTCTRL);
> --
> 1.6.1.3
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-omap" in
> the body of a message to majordomo@xxxxxxxxxxxxxxx
> More majordomo info at http://vger.kernel.org/majordomo-info.html
--
To unsubscribe from this list: send the line "unsubscribe linux-omap" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
