* Pali Rohár <pali.ro...@gmail.com> [130710 06:06]:
> --- a/arch/arm/mach-omap2/board-rx51.c
> +++ b/arch/arm/mach-omap2/board-rx51.c
This file will be gone as soon as we're moving to device
tree based booting. So let's do this in more future proof
way.
> +/**
> + * rx51_secure_dispatcher: Routine to dispatch secure PPA API calls
> + * @idx: The PPA API index
> + * @process: Process ID
> + * @flag: The flag indicating criticality of operation
> + * @nargs: Number of valid arguments out of four.
> + * @arg1, arg2, arg3 args4: Parameters passed to secure API
> + *
> + * Return the non-zero error value on failure.
> + */
> +static u32 rx51_secure_dispatcher(u32 idx, u32 process, u32 flag, u32 nargs,
> + u32 arg1, u32 arg2, u32 arg3, u32 arg4)
> +{
> + u32 ret;
> + u32 param[5];
> +
> + param[0] = nargs+1; /* RX-51 needs number of arguments + 1 */
> + param[1] = arg1;
> + param[2] = arg2;
> + param[3] = arg3;
> + param[4] = arg4;
> +
> + /*
> + * Secure API needs physical address
> + * pointer for the parameters
> + */
> + local_irq_disable();
> + local_fiq_disable();
> + flush_cache_all();
> + outer_clean_range(__pa(param), __pa(param + 5));
> + ret = omap_smc3(idx, process, flag, __pa(param));
> + flush_cache_all();
> + local_fiq_enable();
> + local_irq_enable();
> +
> + return ret;
> +}
I think this used to be in omap-secure.c, and then made rx51
specific.. But since board-rx51.c is going away, let's move
this function to omap-secure.c.
> + * rx51_secure_update_aux_cr: Routine to modify the contents of Auxiliary
> Control Register
> + * @set_bits: bits to set in ACR
> + * @clr_bits: bits to clear in ACR
> + *
> + * Return the non-zero error value on failure.
> +*/
> +static u32 rx51_secure_update_aux_cr(u32 set_bits, u32 clear_bits)
> +{
> + u32 acr;
> +
> + /* Read ACR */
> + asm volatile ("mrc p15, 0, %0, c1, c0, 1" : "=r" (acr));
> + acr &= ~clear_bits;
> + acr |= set_bits;
> +
> + return rx51_secure_dispatcher(RX51_PPA_WRITE_ACR,
> + 0,
> + FLAG_START_CRITICAL,
> + 1, acr, 0, 0, 0);
> +}
This too.
> static void __init rx51_init(void)
> {
> struct omap_sdrc_params *sdrc_params;
> @@ -105,6 +175,14 @@ static void __init rx51_init(void)
> rx51_peripherals_init();
> rx51_camera_init();
>
> + if (omap_type() == OMAP2_DEVICE_TYPE_SEC) {
> +#ifdef CONFIG_ARM_ERRATA_430973
> + pr_info("RX-51: Enabling ARM errata 430973 workaround\n");
> + /* set IBE to 1 */
> + rx51_secure_update_aux_cr(BIT(6), 0);
> +#endif
> + }
> +
> /* Ensure SDRC pins are mux'd for self-refresh */
> omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
> omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
Then this can be called both from board-generic.c based on the
compatible flag, and board-rx51.c for now.
Regards,
Tony
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