| Message ID | 20181221063010.25256-3-peng.fan@nxp.com |
|---|---|
| State | Awaiting Upstream |
| Delegated to: | Stefano Babic |
| Headers | show
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| Series |
i.MX8QXP: MEK: support SPL
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diff --git a/arch/arm/mach-imx/imx8/Kconfig b/arch/arm/mach-imx/imx8/Kconfig index 9671107cb6..f76a139684 100644 --- a/arch/arm/mach-imx/imx8/Kconfig +++ b/arch/arm/mach-imx/imx8/Kconfig @@ -3,6 +3,13 @@ if ARCH_IMX8 config IMX8 bool +config MU_BASE_SPL + hex "MU base address used in SPL" + default 0x5d1b0000 + help + SPL runs in EL3 mode, it use MU0_A to communicate with SCU. + So we could not reuse the one in dts which is for normal U-Boot. + config IMX8QXP select IMX8 select SUPPORT_SPL diff --git a/drivers/misc/imx8/scu.c b/drivers/misc/imx8/scu.c index 15101b3e5f..1b9c49c99c 100644 --- a/drivers/misc/imx8/scu.c +++ b/drivers/misc/imx8/scu.c @@ -191,7 +191,11 @@ static int imx8_scu_probe(struct udevice *dev) if (addr == FDT_ADDR_T_NONE) return -EINVAL; +#ifdef CONFIG_SPL_BUILD + plat->base = (struct mu_type *)CONFIG_MU_BASE_SPL; +#else plat->base = (struct mu_type *)addr; +#endif /* U-Boot not enable interrupts, so need to enable RX interrupts */ mu_hal_init(plat->base);
SPL runs in EL3 mode, except MU0_A, others are not powered on, and could not be used. However normal U-Boot use MU1_A, so we could not reuse the one in dts. And we could not replace the one in dts with MU0_A, because MU0_A is reserved in secure world. Signed-off-by: Peng Fan <peng.fan@nxp.com> --- arch/arm/mach-imx/imx8/Kconfig | 7 +++++++ drivers/misc/imx8/scu.c | 4 ++++ 2 files changed, 11 insertions(+)