[PATCH 12/19] ARM: OMAP4: PM: update ROM return address for OSWR and OFF
Tony Lindgren
tony at atomide.com
Tue Apr 24 12:39:16 EDT 2012
* Tero Kristo <t-kristo at ti.com> [120420 02:39]:
> @@ -384,6 +386,17 @@ int omap4_enter_lowpower(unsigned int cpu, unsigned int power_state)
> set_cpu_next_pwrst(wakeup_cpu, PWRDM_POWER_ON);
>
> if (omap4_mpuss_read_prev_context_state()) {
> + /*
> + * Dummy dispatcher call after OSWR and OFF
> + * Restore the right return Kernel address (with MMU on) for
> + * subsequent calls to secure ROM. Otherwise the return address
> + * will be to a PA return address and the system will hang.
> + */
> + if (omap_type() != OMAP2_DEVICE_TYPE_GP)
> + omap_secure_dispatcher(OMAP4_PPA_SERVICE_0,
> + FLAG_START_CRITICAL,
> + 0, 0, 0, 0, 0);
> +
> restore_ivahd_tesla_regs();
> restore_l3instr_regs();
This SoC test here too should be only done once during init.
Tony
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