From 6622c30f2e033eb4268720c1927a52062406f870 Mon Sep 17 00:00:00 2001 From: Michael Walle Date: Tue, 23 Aug 2022 11:30:14 +0200 Subject: [PATCH] armv8: layerscape: spl: mark OCRAM as non-secure By default the OCRAM is marked as secure. While the SPL runs in EL3 and thus can access it, DMA devices cannot. Mark the whole OCRAM as non-secure. This will fix MMC and SD card boot on LS1028A when using SPL instead of TF-A. Signed-off-by: Michael Walle Signed-off-by: Peng Fan --- arch/arm/cpu/armv8/fsl-layerscape/spl.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/arch/arm/cpu/armv8/fsl-layerscape/spl.c b/arch/arm/cpu/armv8/fsl-layerscape/spl.c index 5f09ef0a4a..3a4b665f24 100644 --- a/arch/arm/cpu/armv8/fsl-layerscape/spl.c +++ b/arch/arm/cpu/armv8/fsl-layerscape/spl.c @@ -67,11 +67,24 @@ void spl_board_init(void) #endif } +void tzpc_init(void) +{ + /* + * Mark the whole OCRAM as non-secure, otherwise DMA devices cannot + * access it. This is for example necessary for MMC boot. + */ +#ifdef TZPCR0SIZE_BASE + out_le32(TZPCR0SIZE_BASE, 0); +#endif +} + void board_init_f(ulong dummy) { int ret; icache_enable(); + tzpc_init(); + /* Clear global data */ memset((void *)gd, 0, sizeof(gd_t)); if (IS_ENABLED(CONFIG_DEBUG_UART)) -- 2.39.5