From 3ceaa825869bd43e9a2ec00a90589cc84885bd40 Mon Sep 17 00:00:00 2001 From: Sam Day Date: Tue, 7 May 2024 18:41:23 +0000 Subject: [PATCH] mach-snapdragon: do carveouts for qcs404 only The newly introduced carve_out_reserved_memory causes issues when U-Boot is chained from the lk2nd bootloader. lk2nd provides a simple-framebuffer device and marks the framebuffer region as no-map in the supplied /reserved-memory. Consequently, the simple_video driver triggers a page fault when it tries to write to this region. As per Caleb's advice, this simple patch only does the carveouts for the qcs404 SoC for which it was originally designed. The intent is to do the carveouts for more Qualcomm SoCs in future. Signed-off-by: Caleb Connolly --- arch/arm/mach-snapdragon/board.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/arch/arm/mach-snapdragon/board.c b/arch/arm/mach-snapdragon/board.c index 3d5994c878..b439a19ec7 100644 --- a/arch/arm/mach-snapdragon/board.c +++ b/arch/arm/mach-snapdragon/board.c @@ -467,10 +467,12 @@ void enable_caches(void) gd->arch.tlb_addr = tlb_addr; gd->arch.tlb_size = tlb_size; - carveout_start = get_timer(0); - /* Takes ~20-50ms on SDM845 */ - carve_out_reserved_memory(); - debug("carveout time: %lums\n", get_timer(carveout_start)); - + /* We do the carveouts only for QCS404, for now. */ + if (fdt_node_check_compatible(gd->fdt_blob, 0, "qcom,qcs404") == 0) { + carveout_start = get_timer(0); + /* Takes ~20-50ms on SDM845 */ + carve_out_reserved_memory(); + debug("carveout time: %lums\n", get_timer(carveout_start)); + } dcache_enable(); } -- 2.39.5