From af288cb291da3abef6be0875527729296f7de7a0 Mon Sep 17 00:00:00 2001 From: Hou Zhiqiang Date: Thu, 6 Aug 2020 14:38:19 +0800 Subject: [PATCH] arm64: Layerscape: Survive LPI one-way reset workaround The workaround of LPI one-way reset issue is broken by the series: https://patchwork.ozlabs.org/project/uboot/list/?series=192398 This patch is to add DT node for GIC RD tables and create corresponding reserved-memory node in kernel DT to fix it. Signed-off-by: Hou Zhiqiang Reviewed-by: Priyanka Jain --- arch/arm/cpu/armv8/fsl-layerscape/soc.c | 17 ++++++++++++++++- arch/arm/dts/fsl-ls1028a.dtsi | 6 ++++++ arch/arm/dts/fsl-ls1088a.dtsi | 6 ++++++ arch/arm/dts/fsl-ls2080a.dtsi | 6 ++++++ arch/arm/dts/fsl-lx2160a.dtsi | 6 ++++++ 5 files changed, 40 insertions(+), 1 deletion(-) diff --git a/arch/arm/cpu/armv8/fsl-layerscape/soc.c b/arch/arm/cpu/armv8/fsl-layerscape/soc.c index 5254cdf366..87fb321c63 100644 --- a/arch/arm/cpu/armv8/fsl-layerscape/soc.c +++ b/arch/arm/cpu/armv8/fsl-layerscape/soc.c @@ -45,7 +45,22 @@ DECLARE_GLOBAL_DATA_PTR; #ifdef CONFIG_GIC_V3_ITS int ls_gic_rd_tables_init(void *blob) { - int ret; + struct fdt_memory lpi_base; + fdt_addr_t addr; + fdt_size_t size; + int offset, ret; + + offset = fdt_path_offset(gd->fdt_blob, "/syscon@0x80000000"); + addr = fdtdec_get_addr_size_auto_noparent(gd->fdt_blob, offset, "reg", + 0, &size, false); + + lpi_base.start = addr; + lpi_base.end = addr + size - 1; + ret = fdtdec_add_reserved_memory(blob, "lpi_rd_table", &lpi_base, NULL); + if (ret) { + debug("%s: failed to add reserved memory\n", __func__); + return ret; + } ret = gic_lpi_tables_init(); if (ret) diff --git a/arch/arm/dts/fsl-ls1028a.dtsi b/arch/arm/dts/fsl-ls1028a.dtsi index 9911690e5c..bf6373d5ec 100644 --- a/arch/arm/dts/fsl-ls1028a.dtsi +++ b/arch/arm/dts/fsl-ls1028a.dtsi @@ -44,6 +44,12 @@ IRQ_TYPE_LEVEL_LOW)>; }; + gic_lpi_base: syscon@0x80000000 { + compatible = "gic-lpi-base"; + reg = <0x0 0x80000000 0x0 0x100000>; + max-gic-redistributors = <2>; + }; + timer { compatible = "arm,armv8-timer"; interrupts = ; }; + gic_lpi_base: syscon@0x80000000 { + compatible = "gic-lpi-base"; + reg = <0x0 0x80000000 0x0 0x100000>; + max-gic-redistributors = <8>; + }; + timer { compatible = "arm,armv8-timer"; interrupts = <1 13 0x8>, /* Physical Secure PPI, active-low */ diff --git a/arch/arm/dts/fsl-ls2080a.dtsi b/arch/arm/dts/fsl-ls2080a.dtsi index 90a0a3f8fb..6b7bf8eb16 100644 --- a/arch/arm/dts/fsl-ls2080a.dtsi +++ b/arch/arm/dts/fsl-ls2080a.dtsi @@ -26,6 +26,12 @@ interrupts = <1 9 0x4>; }; + gic_lpi_base: syscon@0x80000000 { + compatible = "gic-lpi-base"; + reg = <0x0 0x80000000 0x0 0x100000>; + max-gic-redistributors = <8>; + }; + timer { compatible = "arm,armv8-timer"; interrupts = <1 13 0x8>, /* Physical Secure PPI, active-low */ diff --git a/arch/arm/dts/fsl-lx2160a.dtsi b/arch/arm/dts/fsl-lx2160a.dtsi index dee1e2f215..37a4f39c8f 100644 --- a/arch/arm/dts/fsl-lx2160a.dtsi +++ b/arch/arm/dts/fsl-lx2160a.dtsi @@ -43,6 +43,12 @@ interrupts = <1 9 0x4>; }; + gic_lpi_base: syscon@0x80000000 { + compatible = "gic-lpi-base"; + reg = <0x0 0x80000000 0x0 0x200000>; + max-gic-redistributors = <16>; + }; + timer { compatible = "arm,armv8-timer"; interrupts = <1 13 0x8>, /* Physical Secure PPI, active-low */ -- 2.34.1