From: Rob Herring <robh@kernel.org> To: Lakshmi Ramasubramanian <nramas@linux.microsoft.com>, takahiro.akashi@linaro.org, will@kernel.org, catalin.marinas@arm.com, mpe@ellerman.id.au Cc: Thiago Jung Bauermann <bauerman@linux.ibm.com>, zohar@linux.ibm.com, james.morse@arm.com, sashal@kernel.org, benh@kernel.crashing.org, paulus@samba.org, frowand.list@gmail.com, vincenzo.frascino@arm.com, mark.rutland@arm.com, dmitry.kasatkin@gmail.com, jmorris@namei.org, serge@hallyn.com, pasha.tatashin@soleen.com, allison@lohutok.net, masahiroy@kernel.org, bhsharma@redhat.com, mbrugger@suse.com, hsinyi@chromium.org, tao.li@vivo.com, christophe.leroy@c-s.fr, linux-integrity@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, prsriva@linux.microsoft.com, balajib@linux.microsoft.com Subject: [RFC PATCH 4/4] powerpc: Use common of_kexec_setup_new_fdt() Date: Fri, 11 Dec 2020 16:10:06 -0600 [thread overview] Message-ID: <20201211221006.1052453-5-robh@kernel.org> (raw) In-Reply-To: <20201211221006.1052453-1-robh@kernel.org> Signed-off-by: Rob Herring <robh@kernel.org> --- After the IMA changes, delete_fdt_mem_rsv() can also be removed. arch/powerpc/kexec/file_load.c | 125 ++------------------------------- 1 file changed, 6 insertions(+), 119 deletions(-) diff --git a/arch/powerpc/kexec/file_load.c b/arch/powerpc/kexec/file_load.c index e452b11df631..956bcb2d1ec2 100644 --- a/arch/powerpc/kexec/file_load.c +++ b/arch/powerpc/kexec/file_load.c @@ -16,6 +16,7 @@ #include <linux/slab.h> #include <linux/kexec.h> +#include <linux/of.h> #include <linux/of_fdt.h> #include <linux/libfdt.h> #include <asm/setup.h> @@ -156,132 +157,18 @@ int setup_new_fdt(const struct kimage *image, void *fdt, unsigned long initrd_load_addr, unsigned long initrd_len, const char *cmdline) { - int ret, chosen_node; - const void *prop; - - /* Remove memory reservation for the current device tree. */ - ret = delete_fdt_mem_rsv(fdt, __pa(initial_boot_params), - fdt_totalsize(initial_boot_params)); - if (ret == 0) - pr_debug("Removed old device tree reservation.\n"); - else if (ret != -ENOENT) - return ret; - - chosen_node = fdt_path_offset(fdt, "/chosen"); - if (chosen_node == -FDT_ERR_NOTFOUND) { - chosen_node = fdt_add_subnode(fdt, fdt_path_offset(fdt, "/"), - "chosen"); - if (chosen_node < 0) { - pr_err("Error creating /chosen.\n"); - return -EINVAL; - } - } else if (chosen_node < 0) { - pr_err("Malformed device tree: error reading /chosen.\n"); - return -EINVAL; - } - - /* Did we boot using an initrd? */ - prop = fdt_getprop(fdt, chosen_node, "linux,initrd-start", NULL); - if (prop) { - uint64_t tmp_start, tmp_end, tmp_size; - - tmp_start = fdt64_to_cpu(*((const fdt64_t *) prop)); - - prop = fdt_getprop(fdt, chosen_node, "linux,initrd-end", NULL); - if (!prop) { - pr_err("Malformed device tree.\n"); - return -EINVAL; - } - tmp_end = fdt64_to_cpu(*((const fdt64_t *) prop)); - - /* - * kexec reserves exact initrd size, while firmware may - * reserve a multiple of PAGE_SIZE, so check for both. - */ - tmp_size = tmp_end - tmp_start; - ret = delete_fdt_mem_rsv(fdt, tmp_start, tmp_size); - if (ret == -ENOENT) - ret = delete_fdt_mem_rsv(fdt, tmp_start, - round_up(tmp_size, PAGE_SIZE)); - if (ret == 0) - pr_debug("Removed old initrd reservation.\n"); - else if (ret != -ENOENT) - return ret; - - /* If there's no new initrd, delete the old initrd's info. */ - if (initrd_len == 0) { - ret = fdt_delprop(fdt, chosen_node, - "linux,initrd-start"); - if (ret) { - pr_err("Error deleting linux,initrd-start.\n"); - return -EINVAL; - } - - ret = fdt_delprop(fdt, chosen_node, "linux,initrd-end"); - if (ret) { - pr_err("Error deleting linux,initrd-end.\n"); - return -EINVAL; - } - } - } - - if (initrd_len) { - ret = fdt_setprop_u64(fdt, chosen_node, - "linux,initrd-start", - initrd_load_addr); - if (ret < 0) - goto err; - - /* initrd-end is the first address after the initrd image. */ - ret = fdt_setprop_u64(fdt, chosen_node, "linux,initrd-end", - initrd_load_addr + initrd_len); - if (ret < 0) - goto err; - - ret = fdt_add_mem_rsv(fdt, initrd_load_addr, initrd_len); - if (ret) { - pr_err("Error reserving initrd memory: %s\n", - fdt_strerror(ret)); - return -EINVAL; - } - } - - if (cmdline != NULL) { - ret = fdt_setprop_string(fdt, chosen_node, "bootargs", cmdline); - if (ret < 0) - goto err; - } else { - ret = fdt_delprop(fdt, chosen_node, "bootargs"); - if (ret && ret != -FDT_ERR_NOTFOUND) { - pr_err("Error deleting bootargs.\n"); - return -EINVAL; - } - } + int ret; - if (image->type == KEXEC_TYPE_CRASH) { - /* - * Avoid elfcorehdr from being stomped on in kdump kernel by - * setting up memory reserve map. - */ - ret = fdt_add_mem_rsv(fdt, image->arch.elf_headers_mem, - image->arch.elf_headers_sz); - if (ret) { - pr_err("Error reserving elfcorehdr memory: %s\n", - fdt_strerror(ret)); - goto err; - } - } + ret = of_kexec_setup_new_fdt(image, fdt, initrd_load_addr, initrd_len, cmdline); + if (ret) + goto err; - ret = setup_ima_buffer(image, fdt, chosen_node); + ret = setup_ima_buffer(image, fdt, fdt_path_offset(fdt, "/chosen")); if (ret) { pr_err("Error setting up the new device tree.\n"); return ret; } - ret = fdt_setprop(fdt, chosen_node, "linux,booted-from-kexec", NULL, 0); - if (ret) - goto err; - return 0; err: -- 2.25.1
WARNING: multiple messages have this Message-ID (diff)
From: Rob Herring <robh@kernel.org> To: Lakshmi Ramasubramanian <nramas@linux.microsoft.com>, takahiro.akashi@linaro.org, will@kernel.org, catalin.marinas@arm.com, mpe@ellerman.id.au Cc: mark.rutland@arm.com, benh@kernel.crashing.org, bhsharma@redhat.com, tao.li@vivo.com, zohar@linux.ibm.com, paulus@samba.org, vincenzo.frascino@arm.com, frowand.list@gmail.com, sashal@kernel.org, masahiroy@kernel.org, jmorris@namei.org, linux-arm-kernel@lists.infradead.org, serge@hallyn.com, devicetree@vger.kernel.org, pasha.tatashin@soleen.com, prsriva@linux.microsoft.com, hsinyi@chromium.org, allison@lohutok.net, christophe.leroy@c-s.fr, mbrugger@suse.com, balajib@linux.microsoft.com, dmitry.kasatkin@gmail.com, linux-kernel@vger.kernel.org, james.morse@arm.com, linux-integrity@vger.kernel.org, Thiago Jung Bauermann <bauerman@linux.ibm.com> Subject: [RFC PATCH 4/4] powerpc: Use common of_kexec_setup_new_fdt() Date: Fri, 11 Dec 2020 16:10:06 -0600 [thread overview] Message-ID: <20201211221006.1052453-5-robh@kernel.org> (raw) In-Reply-To: <20201211221006.1052453-1-robh@kernel.org> Signed-off-by: Rob Herring <robh@kernel.org> --- After the IMA changes, delete_fdt_mem_rsv() can also be removed. arch/powerpc/kexec/file_load.c | 125 ++------------------------------- 1 file changed, 6 insertions(+), 119 deletions(-) diff --git a/arch/powerpc/kexec/file_load.c b/arch/powerpc/kexec/file_load.c index e452b11df631..956bcb2d1ec2 100644 --- a/arch/powerpc/kexec/file_load.c +++ b/arch/powerpc/kexec/file_load.c @@ -16,6 +16,7 @@ #include <linux/slab.h> #include <linux/kexec.h> +#include <linux/of.h> #include <linux/of_fdt.h> #include <linux/libfdt.h> #include <asm/setup.h> @@ -156,132 +157,18 @@ int setup_new_fdt(const struct kimage *image, void *fdt, unsigned long initrd_load_addr, unsigned long initrd_len, const char *cmdline) { - int ret, chosen_node; - const void *prop; - - /* Remove memory reservation for the current device tree. */ - ret = delete_fdt_mem_rsv(fdt, __pa(initial_boot_params), - fdt_totalsize(initial_boot_params)); - if (ret == 0) - pr_debug("Removed old device tree reservation.\n"); - else if (ret != -ENOENT) - return ret; - - chosen_node = fdt_path_offset(fdt, "/chosen"); - if (chosen_node == -FDT_ERR_NOTFOUND) { - chosen_node = fdt_add_subnode(fdt, fdt_path_offset(fdt, "/"), - "chosen"); - if (chosen_node < 0) { - pr_err("Error creating /chosen.\n"); - return -EINVAL; - } - } else if (chosen_node < 0) { - pr_err("Malformed device tree: error reading /chosen.\n"); - return -EINVAL; - } - - /* Did we boot using an initrd? */ - prop = fdt_getprop(fdt, chosen_node, "linux,initrd-start", NULL); - if (prop) { - uint64_t tmp_start, tmp_end, tmp_size; - - tmp_start = fdt64_to_cpu(*((const fdt64_t *) prop)); - - prop = fdt_getprop(fdt, chosen_node, "linux,initrd-end", NULL); - if (!prop) { - pr_err("Malformed device tree.\n"); - return -EINVAL; - } - tmp_end = fdt64_to_cpu(*((const fdt64_t *) prop)); - - /* - * kexec reserves exact initrd size, while firmware may - * reserve a multiple of PAGE_SIZE, so check for both. - */ - tmp_size = tmp_end - tmp_start; - ret = delete_fdt_mem_rsv(fdt, tmp_start, tmp_size); - if (ret == -ENOENT) - ret = delete_fdt_mem_rsv(fdt, tmp_start, - round_up(tmp_size, PAGE_SIZE)); - if (ret == 0) - pr_debug("Removed old initrd reservation.\n"); - else if (ret != -ENOENT) - return ret; - - /* If there's no new initrd, delete the old initrd's info. */ - if (initrd_len == 0) { - ret = fdt_delprop(fdt, chosen_node, - "linux,initrd-start"); - if (ret) { - pr_err("Error deleting linux,initrd-start.\n"); - return -EINVAL; - } - - ret = fdt_delprop(fdt, chosen_node, "linux,initrd-end"); - if (ret) { - pr_err("Error deleting linux,initrd-end.\n"); - return -EINVAL; - } - } - } - - if (initrd_len) { - ret = fdt_setprop_u64(fdt, chosen_node, - "linux,initrd-start", - initrd_load_addr); - if (ret < 0) - goto err; - - /* initrd-end is the first address after the initrd image. */ - ret = fdt_setprop_u64(fdt, chosen_node, "linux,initrd-end", - initrd_load_addr + initrd_len); - if (ret < 0) - goto err; - - ret = fdt_add_mem_rsv(fdt, initrd_load_addr, initrd_len); - if (ret) { - pr_err("Error reserving initrd memory: %s\n", - fdt_strerror(ret)); - return -EINVAL; - } - } - - if (cmdline != NULL) { - ret = fdt_setprop_string(fdt, chosen_node, "bootargs", cmdline); - if (ret < 0) - goto err; - } else { - ret = fdt_delprop(fdt, chosen_node, "bootargs"); - if (ret && ret != -FDT_ERR_NOTFOUND) { - pr_err("Error deleting bootargs.\n"); - return -EINVAL; - } - } + int ret; - if (image->type == KEXEC_TYPE_CRASH) { - /* - * Avoid elfcorehdr from being stomped on in kdump kernel by - * setting up memory reserve map. - */ - ret = fdt_add_mem_rsv(fdt, image->arch.elf_headers_mem, - image->arch.elf_headers_sz); - if (ret) { - pr_err("Error reserving elfcorehdr memory: %s\n", - fdt_strerror(ret)); - goto err; - } - } + ret = of_kexec_setup_new_fdt(image, fdt, initrd_load_addr, initrd_len, cmdline); + if (ret) + goto err; - ret = setup_ima_buffer(image, fdt, chosen_node); + ret = setup_ima_buffer(image, fdt, fdt_path_offset(fdt, "/chosen")); if (ret) { pr_err("Error setting up the new device tree.\n"); return ret; } - ret = fdt_setprop(fdt, chosen_node, "linux,booted-from-kexec", NULL, 0); - if (ret) - goto err; - return 0; err: -- 2.25.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2020-12-11 23:06 UTC|newest] Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-12-11 22:10 [RFC PATCH 0/4] Kexec FDT setup consolidation Rob Herring 2020-12-11 22:10 ` Rob Herring 2020-12-11 22:10 ` [RFC PATCH 1/4] powerpc: Rename kexec elfcorehdr_addr to elf_headers_mem Rob Herring 2020-12-11 22:10 ` Rob Herring 2020-12-12 0:54 ` Lakshmi Ramasubramanian 2020-12-12 0:54 ` Lakshmi Ramasubramanian 2020-12-22 21:42 ` Thiago Jung Bauermann 2020-12-22 21:42 ` Thiago Jung Bauermann 2020-12-11 22:10 ` [RFC PATCH 2/4] of: Add a common kexec FDT setup function Rob Herring 2020-12-11 22:10 ` Rob Herring 2020-12-12 1:18 ` Lakshmi Ramasubramanian 2020-12-12 1:18 ` Lakshmi Ramasubramanian 2020-12-12 2:17 ` Thiago Jung Bauermann 2020-12-12 2:17 ` Thiago Jung Bauermann 2020-12-12 5:46 ` Lakshmi Ramasubramanian 2020-12-12 5:46 ` Lakshmi Ramasubramanian 2020-12-22 21:48 ` Thiago Jung Bauermann 2020-12-22 21:48 ` Thiago Jung Bauermann 2020-12-11 22:10 ` [RFC PATCH 3/4] arm64: Use common of_kexec_setup_new_fdt() Rob Herring 2020-12-11 22:10 ` Rob Herring 2020-12-12 15:20 ` Lakshmi Ramasubramanian 2020-12-12 15:20 ` Lakshmi Ramasubramanian 2020-12-22 21:49 ` Thiago Jung Bauermann 2020-12-22 21:49 ` Thiago Jung Bauermann 2021-01-12 14:02 ` Will Deacon 2021-01-12 14:02 ` Will Deacon 2020-12-11 22:10 ` Rob Herring [this message] 2020-12-11 22:10 ` [RFC PATCH 4/4] powerpc: " Rob Herring 2020-12-12 15:22 ` Lakshmi Ramasubramanian 2020-12-12 15:22 ` Lakshmi Ramasubramanian 2020-12-22 21:55 ` Thiago Jung Bauermann 2020-12-22 21:55 ` Thiago Jung Bauermann 2020-12-22 23:33 ` Lakshmi Ramasubramanian 2020-12-22 23:33 ` Lakshmi Ramasubramanian
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