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File _service:tar_scm:0004-arm-arm64-loader-Better-memory-allocation-and-error-.patch of Package grub2
From 5d417346956bc3108183020a8a9f20ddda034b48 Mon Sep 17 00:00:00 2001 From: Peter Jones <pjones@redhat.com> Date: Thu, 11 Jul 2019 14:38:57 +0200 Subject: [PATCH 4/9] arm/arm64 loader: Better memory allocation and error messages. On mustang, our memory map looks like: Type Physical start - end #Pages Size Attributes reserved 0000004000000000-00000040001fffff 00000200 2MiB UC WC WT WB conv-mem 0000004000200000-0000004393ffffff 00393e00 14654MiB UC WC WT WB ldr-code 0000004394000000-00000043f7ffffff 00064000 1600MiB UC WC WT WB BS-data 00000043f8000000-00000043f801ffff 00000020 128KiB UC WC WT WB conv-mem 00000043f8020000-00000043fa15bfff 0000213c 34032KiB UC WC WT WB ldr-code 00000043fa15c000-00000043fa2a1fff 00000146 1304KiB UC WC WT WB ldr-data 00000043fa2a2000-00000043fa3e8fff 00000147 1308KiB UC WC WT WB conv-mem 00000043fa3e9000-00000043fa3e9fff 00000001 4KiB UC WC WT WB ldr-data 00000043fa3ea000-00000043fa3eafff 00000001 4KiB UC WC WT WB ldr-code 00000043fa3eb000-00000043fa4affff 000000c5 788KiB UC WC WT WB BS-code 00000043fa4b0000-00000043fa59ffff 000000f0 960KiB UC WC WT WB RT-code 00000043fa5a0000-00000043fa5affff 00000010 64KiB RT UC WC WT WB RT-data 00000043fa5b0000-00000043fa5bffff 00000010 64KiB RT UC WC WT WB RT-code 00000043fa5c0000-00000043fa5cffff 00000010 64KiB RT UC WC WT WB ldr-data 00000043fa5d0000-00000043fa5d0fff 00000001 4KiB UC WC WT WB BS-code 00000043fa5d1000-00000043fa5ddfff 0000000d 52KiB UC WC WT WB reserved 00000043fa5de000-00000043fa60ffff 00000032 200KiB UC WC WT WB ACPI-rec 00000043fa610000-00000043fa6affff 000000a0 640KiB UC WC WT WB ACPI-nvs 00000043fa6b0000-00000043fa6bffff 00000010 64KiB UC WC WT WB ACPI-rec 00000043fa6c0000-00000043fa70ffff 00000050 320KiB UC WC WT WB RT-code 00000043fa710000-00000043fa72ffff 00000020 128KiB RT UC WC WT WB RT-data 00000043fa730000-00000043fa78ffff 00000060 384KiB RT UC WC WT WB RT-code 00000043fa790000-00000043fa79ffff 00000010 64KiB RT UC WC WT WB RT-data 00000043fa7a0000-00000043fa99ffff 00000200 2MiB RT UC WC WT WB RT-code 00000043fa9a0000-00000043fa9affff 00000010 64KiB RT UC WC WT WB RT-data 00000043fa9b0000-00000043fa9cffff 00000020 128KiB RT UC WC WT WB BS-code 00000043fa9d0000-00000043fa9d9fff 0000000a 40KiB UC WC WT WB reserved 00000043fa9da000-00000043fa9dbfff 00000002 8KiB UC WC WT WB conv-mem 00000043fa9dc000-00000043fc29dfff 000018c2 25352KiB UC WC WT WB BS-data 00000043fc29e000-00000043fc78afff 000004ed 5044KiB UC WC WT WB conv-mem 00000043fc78b000-00000043fca01fff 00000277 2524KiB UC WC WT WB BS-data 00000043fca02000-00000043fcea3fff 000004a2 4744KiB UC WC WT WB conv-mem 00000043fcea4000-00000043fcea4fff 00000001 4KiB UC WC WT WB BS-data 00000043fcea5000-00000043fd192fff 000002ee 3000KiB UC WC WT WB conv-mem 00000043fd193000-00000043fd2b0fff 0000011e 1144KiB UC WC WT WB BS-data 00000043fd2b1000-00000043ff80ffff 0000255f 38268KiB UC WC WT WB BS-code 00000043ff810000-00000043ff99ffff 00000190 1600KiB UC WC WT WB RT-code 00000043ff9a0000-00000043ff9affff 00000010 64KiB RT UC WC WT WB conv-mem 00000043ff9b0000-00000043ff9bffff 00000010 64KiB UC WC WT WB RT-data 00000043ff9c0000-00000043ff9effff 00000030 192KiB RT UC WC WT WB conv-mem 00000043ff9f0000-00000043ffa05fff 00000016 88KiB UC WC WT WB BS-data 00000043ffa06000-00000043ffffffff 000005fa 6120KiB UC WC WT WB MMIO 0000000010510000-0000000010510fff 00000001 4KiB RT MMIO 0000000010548000-0000000010549fff 00000002 8KiB RT MMIO 0000000017000000-0000000017001fff 00000002 8KiB RT MMIO 000000001c025000-000000001c025fff 00000001 4KiB RT This patch adds a requirement when we're trying to find the base of ram, that the memory we choose is actually /allocatable/ conventional memory, not merely write-combining. On this machine that means we wind up with an allocation around 0x4392XXXXXX, which is a reasonable address. This also changes grub_efi_allocate_pages_real() so that if 0 is allocated, it tries to allocate again starting with the same max address it did the first time, rather than interposing GRUB_EFI_MAX_USABLE_ADDRESS there, so that any per-platform constraints on its given address are maintained. Signed-off-by: Peter Jones <pjones@redhat.com> squash! arm/arm64 loader: Better memory allocation and error messages. Use PRIxGRUB_* conversion specifier in printf's format string to correspond properly to the data type of arguments. Signed-off-by: Michael Chang <mchang@suse.com> --- grub-core/kern/efi/mm.c | 33 ++++++++++--- grub-core/loader/arm64/efi/linux.c | 78 ++++++++++++++++++++++-------- 2 files changed, 84 insertions(+), 27 deletions(-) --- a/grub-core/kern/efi/mm.c +++ b/grub-core/kern/efi/mm.c @@ -153,6 +153,7 @@ { grub_efi_status_t status; grub_efi_boot_services_t *b; + grub_efi_physical_address_t ret = address; /* Limit the memory access to less than 4GB for 32-bit platforms. */ if (address > GRUB_EFI_MAX_USABLE_ADDRESS) @@ -169,19 +170,22 @@ } b = grub_efi_system_table->boot_services; - status = b->allocate_pages (alloctype, memtype, pages, &address); + status = b->allocate_pages (alloctype, memtype, pages, &ret); if (status != GRUB_EFI_SUCCESS) { + grub_dprintf ("efi", + "allocate_pages(%d, %d, 0x%0" PRIxGRUB_SIZE ", 0x%016" PRIxGRUB_UINT64_T ") = 0x%016" PRIxGRUB_SIZE "\n", + alloctype, memtype, pages, address, status); grub_error (GRUB_ERR_OUT_OF_MEMORY, N_("out of memory")); return NULL; } - if (address == 0) + if (ret == 0) { /* Uggh, the address 0 was allocated... This is too annoying, so reallocate another one. */ - address = GRUB_EFI_MAX_USABLE_ADDRESS; - status = b->allocate_pages (alloctype, memtype, pages, &address); + ret = address; + status = b->allocate_pages (alloctype, memtype, pages, &ret); grub_efi_free_pages (0, pages); if (status != GRUB_EFI_SUCCESS) { @@ -190,9 +194,9 @@ } } - grub_efi_store_alloc (address, pages); + grub_efi_store_alloc (ret, pages); - return (void *) ((grub_addr_t) address); + return (void *) ((grub_addr_t) ret); } void * @@ -711,8 +715,21 @@ for (desc = memory_map, *base_addr = GRUB_EFI_MAX_USABLE_ADDRESS; (grub_addr_t) desc < ((grub_addr_t) memory_map + memory_map_size); desc = NEXT_MEMORY_DESCRIPTOR (desc, desc_size)) - if (desc->attribute & GRUB_EFI_MEMORY_WB) - *base_addr = grub_min (*base_addr, desc->physical_start); + { + if (desc->type == GRUB_EFI_CONVENTIONAL_MEMORY && + (desc->attribute & GRUB_EFI_MEMORY_WB)) + { + *base_addr = grub_min (*base_addr, desc->physical_start); + grub_dprintf ("efi", "setting base_addr=0x%016" PRIxGRUB_ADDR "\n", *base_addr); + } + else + { + grub_dprintf ("efi", "ignoring address 0x%016" PRIxGRUB_UINT64_T "\n", desc->physical_start); + } + } + + if (*base_addr == GRUB_EFI_MAX_USABLE_ADDRESS) + grub_dprintf ("efi", "base_addr 0x%016" PRIxGRUB_ADDR " is probably wrong.\n", *base_addr); grub_free(memory_map); --- a/grub-core/loader/arm64/efi/linux.c +++ b/grub-core/loader/arm64/efi/linux.c @@ -89,13 +89,15 @@ { grub_efi_loaded_image_t *loaded_image = NULL; int node, retval, len; - + grub_err_t err = GRUB_ERR_NONE; void *fdt; fdt = grub_fdt_load (GRUB_EFI_LINUX_FDT_EXTRA_SPACE); - if (!fdt) - goto failure; + { + err = grub_error(GRUB_ERR_BAD_OS, "failed to load FDT"); + goto failure; + } node = grub_fdt_find_subnode (fdt, 0, "chosen"); if (node < 0) @@ -106,17 +108,26 @@ */ retval = grub_fdt_set_prop32(fdt, 0, "#address-cells", 2); if (retval) - goto failure; + { + err = grub_error(retval, "Could not find #address-cells"); + goto failure; + } retval = grub_fdt_set_prop32(fdt, 0, "#size-cells", 2); if (retval) - goto failure; + { + err = grub_error(retval, "Could not find #size-cells"); + goto failure; + } node = grub_fdt_add_subnode (fdt, 0, "chosen"); } if (node < 1) - goto failure; + { + err = grub_error(grub_errno, "failed to load chosen fdt node."); + goto failure; + } /* Set initrd info */ if (initrd_start && initrd_end > initrd_start) @@ -127,15 +138,26 @@ retval = grub_fdt_set_prop64 (fdt, node, "linux,initrd-start", initrd_start); if (retval) - goto failure; + { + err = grub_error(retval, "Failed to set linux,initrd-start property"); + goto failure; + } + retval = grub_fdt_set_prop64 (fdt, node, "linux,initrd-end", initrd_end); if (retval) - goto failure; + { + err = grub_error(retval, "Failed to set linux,initrd-end property"); + goto failure; + } } - if (grub_fdt_install() != GRUB_ERR_NONE) - goto failure; + retval = grub_fdt_install(); + if (retval != GRUB_ERR_NONE) + { + err = grub_error(retval, "Failed to install fdt"); + goto failure; + } grub_dprintf ("linux", "Installed/updated FDT configuration table @ %p\n", fdt); @@ -143,14 +165,20 @@ /* Convert command line to UCS-2 */ loaded_image = grub_efi_get_loaded_image (grub_efi_image_handle); if (!loaded_image) - goto failure; + { + err = grub_error(grub_errno, "Failed to install fdt"); + goto failure; + } loaded_image->load_options_size = len = (grub_strlen (linux_args) + 1) * sizeof (grub_efi_char16_t); loaded_image->load_options = grub_efi_allocate_any_pages (GRUB_EFI_BYTES_TO_PAGES (loaded_image->load_options_size)); if (!loaded_image->load_options) - return grub_error(GRUB_ERR_BAD_OS, "failed to create kernel parameters"); + { + err = grub_error(GRUB_ERR_BAD_OS, "failed to create kernel parameters"); + goto failure; + } loaded_image->load_options_size = 2 * grub_utf8_to_utf16 (loaded_image->load_options, len, @@ -160,7 +188,7 @@ failure: grub_fdt_unload(); - return grub_error(GRUB_ERR_BAD_OS, "failed to install/update FDT"); + return err; } static void @@ -246,16 +274,28 @@ static void * allocate_initrd_mem (int initrd_pages) { - grub_addr_t max_addr; + grub_addr_t max_addr = 0; + grub_err_t err; + void *ret; + + err = grub_efi_get_ram_base (&max_addr); + if (err != GRUB_ERR_NONE) + { + grub_error (err, "grub_efi_get_ram_base() failed"); + return NULL; + } - if (grub_efi_get_ram_base (&max_addr) != GRUB_ERR_NONE) - return NULL; + grub_dprintf ("linux", "max_addr: 0x%016lx, INITRD_MAX_ADDRESS_OFFSET: 0x%016llx\n", + max_addr, INITRD_MAX_ADDRESS_OFFSET); max_addr += INITRD_MAX_ADDRESS_OFFSET - 1; + grub_dprintf ("linux", "calling grub_efi_allocate_pages_real (0x%016lx, 0x%08x, EFI_ALLOCATE_MAX_ADDRESS, EFI_LOADER_DATA)", max_addr, initrd_pages); - return grub_efi_allocate_pages_real (max_addr, initrd_pages, - GRUB_EFI_ALLOCATE_MAX_ADDRESS, - GRUB_EFI_LOADER_DATA); + ret = grub_efi_allocate_pages_real (max_addr, initrd_pages, + GRUB_EFI_ALLOCATE_MAX_ADDRESS, + GRUB_EFI_LOADER_DATA); + grub_dprintf ("linux", "got 0x%016llx\n", (unsigned long long)ret); + return ret; } static grub_err_t
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