diff options
Diffstat (limited to 'recipes-bsp/u-boot-mainline/files/0008-MLK-16087-imx8qm-qxp-Disable-kernel-FDT-nodes-for-th.patch')
| -rw-r--r-- | recipes-bsp/u-boot-mainline/files/0008-MLK-16087-imx8qm-qxp-Disable-kernel-FDT-nodes-for-th.patch | 154 |
1 files changed, 0 insertions, 154 deletions
diff --git a/recipes-bsp/u-boot-mainline/files/0008-MLK-16087-imx8qm-qxp-Disable-kernel-FDT-nodes-for-th.patch b/recipes-bsp/u-boot-mainline/files/0008-MLK-16087-imx8qm-qxp-Disable-kernel-FDT-nodes-for-th.patch deleted file mode 100644 index 919a777..0000000 --- a/recipes-bsp/u-boot-mainline/files/0008-MLK-16087-imx8qm-qxp-Disable-kernel-FDT-nodes-for-th.patch +++ /dev/null @@ -1,154 +0,0 @@ -From db6acd1b9a0c4ee3819c5546d033be4710233084 Mon Sep 17 00:00:00 2001 -From: Ye Li <ye.li@nxp.com> -Date: Mon, 16 Apr 2018 00:05:24 -0700 -Subject: [PATCH 08/15] MLK-16087 imx8qm/qxp: Disable kernel FDT nodes for the - resources are not owned - -Before starting the kernel, need to check if the enabled nodes (resources) in FDT -are owned by current partition. If it is not owned, need to disable it because A core -can't access it. -We use the node's power-domain property to get the PD node which has the SCFW resource -id in its reg property. Then we can check it with SCFW. - -Signed-off-by: Ye Li <ye.li@nxp.com> -(cherry picked from downstream commit 358372674b29685788a4007b0944ab03b7fafc13) ---- - arch/arm/mach-imx/imx8/cpu.c | 115 +++++++++++++++++++++++++++++++++++++++++++ - 1 file changed, 115 insertions(+) - -diff --git a/arch/arm/mach-imx/imx8/cpu.c b/arch/arm/mach-imx/imx8/cpu.c -index 72404d9eb6..7f2dd2166b 100644 ---- a/arch/arm/mach-imx/imx8/cpu.c -+++ b/arch/arm/mach-imx/imx8/cpu.c -@@ -11,6 +11,8 @@ - #include <dm/lists.h> - #include <dm/uclass.h> - #include <errno.h> -+#include <fdt_support.h> -+#include <fdtdec.h> - #include <thermal.h> - #include <asm/arch/sci/sci.h> - #include <asm/arch/sid.h> -@@ -193,6 +195,119 @@ int mmc_get_env_dev(void) - } - #endif - -+#ifdef CONFIG_OF_SYSTEM_SETUP -+static bool check_owned_resource(sc_rsrc_t rsrc_id) -+{ -+ sc_ipc_t ipcHndl = 0; -+ bool owned; -+ -+ ipcHndl = -1; -+ -+ owned = sc_rm_is_resource_owned(ipcHndl, rsrc_id); -+ -+ return owned; -+} -+ -+static int disable_fdt_node(void *blob, int nodeoffset) -+{ -+ int rc, ret; -+ const char *status = "disabled"; -+ -+ do { -+ rc = fdt_setprop(blob, nodeoffset, "status", status, strlen(status) + 1); -+ if (rc) { -+ if (rc == -FDT_ERR_NOSPACE) { -+ ret = fdt_increase_size(blob, 512); -+ if (ret) -+ return ret; -+ } -+ } -+ } while (rc == -FDT_ERR_NOSPACE); -+ -+ return rc; -+} -+ -+static void update_fdt_with_owned_resources(void *blob) -+{ -+ /* Traverses the fdt nodes, -+ * check its power domain and use the resource id in the power domain -+ * for checking whether it is owned by current partition -+ */ -+ -+ int offset = 0, next_off, addr; -+ int depth, next_depth; -+ unsigned int rsrc_id; -+ const fdt32_t *php; -+ const char *name; -+ int rc; -+ -+ for (offset = fdt_next_node(blob, offset, &depth); offset > 0; -+ offset = fdt_next_node(blob, offset, &depth)) { -+ -+ debug("Node name: %s, depth %d\n", fdt_get_name(blob, offset, NULL), depth); -+ -+ if (!fdtdec_get_is_enabled(blob, offset)) { -+ debug(" - ignoring disabled device\n"); -+ continue; -+ } -+ -+ if (!fdt_node_check_compatible(blob, offset, "nxp,imx8-pd")) { -+ /* Skip to next depth=1 node*/ -+ next_off = offset; -+ next_depth = depth; -+ do { -+ offset = next_off; -+ depth = next_depth; -+ next_off = fdt_next_node(blob, offset, &next_depth); -+ if (next_off < 0 || next_depth < 1) -+ break; -+ -+ debug("PD name: %s, offset %d, depth %d\n", -+ fdt_get_name(blob, next_off, NULL), next_off, next_depth); -+ } while (next_depth > 1); -+ -+ continue; -+ } -+ -+ php = fdt_getprop(blob, offset, "power-domains", NULL); -+ if (!php) { -+ debug(" - ignoring no power-domains\n"); -+ } else { -+ addr = fdt_node_offset_by_phandle(blob, fdt32_to_cpu(*php)); -+ rsrc_id = fdtdec_get_uint(blob, addr, "reg", 0); -+ -+ if (rsrc_id == SC_R_LAST) { -+ name = fdt_get_name(blob, offset, NULL); -+ printf("%s's power domain use SC_R_LAST\n", name); -+ continue; -+ } -+ -+ debug("power-domains phandle 0x%x, addr 0x%x, resource id %u\n", -+ fdt32_to_cpu(*php), addr, rsrc_id); -+ -+ if (!check_owned_resource(rsrc_id)) { -+ -+ /* If the resource is not owned, disable it in FDT */ -+ rc = disable_fdt_node(blob, offset); -+ if (!rc) -+ printf("Disable %s, resource id %u, pd phandle 0x%x\n", -+ fdt_get_name(blob, offset, NULL), rsrc_id, fdt32_to_cpu(*php)); -+ else -+ printf("Unable to disable %s, err=%s\n", -+ fdt_get_name(blob, offset, NULL), fdt_strerror(rc)); -+ } -+ } -+ } -+} -+ -+int ft_system_setup(void *blob, bd_t *bd) -+{ -+ update_fdt_with_owned_resources(blob); -+ -+ return 0; -+} -+#endif -+ - #define MEMSTART_ALIGNMENT SZ_2M /* Align the memory start with 2MB */ - - static int get_owned_memreg(sc_rm_mr_t mr, sc_faddr_t *addr_start, --- -2.13.6 - |