From patchwork Fri Aug 2 21:29:03 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Roy Franz X-Patchwork-Id: 2838184 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 68D90BF535 for ; Fri, 2 Aug 2013 21:30:39 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id B6CB1203E6 for ; Fri, 2 Aug 2013 21:30:37 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 9913D201F8 for ; Fri, 2 Aug 2013 21:30:35 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1V5MvR-0006dU-32; Fri, 02 Aug 2013 21:30:17 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1V5MvI-0007DA-Jo; Fri, 02 Aug 2013 21:30:08 +0000 Received: from mail-pd0-f175.google.com ([209.85.192.175]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1V5Mup-000781-S5 for linux-arm-kernel@lists.infradead.org; Fri, 02 Aug 2013 21:29:48 +0000 Received: by mail-pd0-f175.google.com with SMTP id 5so1080694pdd.20 for ; Fri, 02 Aug 2013 14:29:18 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=from:to:cc:subject:date:message-id:x-mailer:in-reply-to:references :x-gm-message-state; bh=8szuq90l1ZPcB/A4x7Y7jzZClcQv0g/ZCYsMjg4EE0A=; b=Gsf0oZ7WXpDSwQiq/b+E4eJah836fXFnmCvFEhx1xeVufPQmOAVku7LhMLFf7BEfNi HuCWEySyg/YV6mOv+HQgPURaRTh+bcVYJORkzoSuDSD+ZGgEg0JHZKf5JuVxFPL7ZYaC HVXxSmtsf8KBhdtd8n1yZFPhYqIys5MatiI8GUBGz0vDzd4TjtM72fKLDU+BPRd4MMpG 1oftuCqX5u8t9s7m3ymSZ0U+mJc9C3vf/aoL4vS7n3dcUqXlgH2GQGzRR7gBZ1ju8vp+ DOUvHIEz8nhLV335PzTuTRZKB4S13s6FzIz1gzJ71y/j3no1DwogZSwB2wPsAIkObaab Rj6w== X-Received: by 10.68.201.6 with SMTP id jw6mr9807187pbc.202.1375478958452; Fri, 02 Aug 2013 14:29:18 -0700 (PDT) Received: from rfranz-i7.local (c-24-10-48-230.hsd1.ca.comcast.net. [24.10.48.230]) by mx.google.com with ESMTPSA id aj3sm12570219pad.8.2013.08.02.14.29.17 for (version=TLSv1.2 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Fri, 02 Aug 2013 14:29:17 -0700 (PDT) From: Roy Franz To: linux-kernel@vger.kernel.org, linux-efi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, matt.fleming@intel.com, linux@arm.linux.org.uk Subject: [PATCH 2/7] Move common EFI stub code from x86 arch code to common location Date: Fri, 2 Aug 2013 14:29:03 -0700 Message-Id: <1375478948-22562-3-git-send-email-roy.franz@linaro.org> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1375478948-22562-1-git-send-email-roy.franz@linaro.org> References: <1375478948-22562-1-git-send-email-roy.franz@linaro.org> X-Gm-Message-State: ALoCoQlPNkeKqYCqPepOKC2ekaoD7n1/3qWV8czo/VOF3f0Tlsrl1FyTRE2qRtaZN3FdbCQfa8OY X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20130802_172940_091576_CF4C1B85 X-CRM114-Status: GOOD ( 23.11 ) X-Spam-Score: -1.9 (-) Cc: Roy Franz , leif.lindholm@linaro.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-5.7 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP No code changes made, just moving functions from x86 arch directory to common location. Code is shared using #include, similar to how decompression code is shared among architectures. Signed-off-by: Roy Franz --- arch/x86/boot/compressed/eboot.c | 442 +----------------------------- arch/x86/boot/compressed/eboot.h | 6 - drivers/firmware/efi/efi-stub-helper.c | 463 ++++++++++++++++++++++++++++++++ include/linux/efi.h | 8 + 4 files changed, 472 insertions(+), 447 deletions(-) create mode 100644 drivers/firmware/efi/efi-stub-helper.c diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c index b7388a4..ab0eefc 100644 --- a/arch/x86/boot/compressed/eboot.c +++ b/arch/x86/boot/compressed/eboot.c @@ -19,214 +19,10 @@ static efi_system_table_t *sys_table; -static void efi_char16_printk(efi_char16_t *str) -{ - struct efi_simple_text_output_protocol *out; - - out = (struct efi_simple_text_output_protocol *)sys_table->con_out; - efi_call_phys2(out->output_string, out, str); -} - -static void efi_printk(char *str) -{ - char *s8; - - for (s8 = str; *s8; s8++) { - efi_char16_t ch[2] = { 0 }; - - ch[0] = *s8; - if (*s8 == '\n') { - efi_char16_t nl[2] = { '\r', 0 }; - efi_char16_printk(nl); - } - - efi_char16_printk(ch); - } -} - -static efi_status_t __get_map(efi_memory_desc_t **map, unsigned long *map_size, - unsigned long *desc_size) -{ - efi_memory_desc_t *m = NULL; - efi_status_t status; - unsigned long key; - u32 desc_version; - - *map_size = sizeof(*m) * 32; -again: - /* - * Add an additional efi_memory_desc_t because we're doing an - * allocation which may be in a new descriptor region. - */ - *map_size += sizeof(*m); - status = efi_call_phys3(sys_table->boottime->allocate_pool, - EFI_LOADER_DATA, *map_size, (void **)&m); - if (status != EFI_SUCCESS) - goto fail; - - status = efi_call_phys5(sys_table->boottime->get_memory_map, map_size, - m, &key, desc_size, &desc_version); - if (status == EFI_BUFFER_TOO_SMALL) { - efi_call_phys1(sys_table->boottime->free_pool, m); - goto again; - } - - if (status != EFI_SUCCESS) - efi_call_phys1(sys_table->boottime->free_pool, m); - -fail: - *map = m; - return status; -} - -/* - * Allocate at the highest possible address that is not above 'max'. - */ -static efi_status_t high_alloc(unsigned long size, unsigned long align, - unsigned long *addr, unsigned long max) -{ - unsigned long map_size, desc_size; - efi_memory_desc_t *map; - efi_status_t status; - unsigned long nr_pages; - u64 max_addr = 0; - int i; - - status = __get_map(&map, &map_size, &desc_size); - if (status != EFI_SUCCESS) - goto fail; - - nr_pages = round_up(size, EFI_PAGE_SIZE) / EFI_PAGE_SIZE; -again: - for (i = 0; i < map_size / desc_size; i++) { - efi_memory_desc_t *desc; - unsigned long m = (unsigned long)map; - u64 start, end; - - desc = (efi_memory_desc_t *)(m + (i * desc_size)); - if (desc->type != EFI_CONVENTIONAL_MEMORY) - continue; - - if (desc->num_pages < nr_pages) - continue; - start = desc->phys_addr; - end = start + desc->num_pages * (1UL << EFI_PAGE_SHIFT); +#include "../../../../drivers/firmware/efi/efi-stub-helper.c" - if ((start + size) > end || (start + size) > max) - continue; - - if (end - size > max) - end = max; - - if (round_down(end - size, align) < start) - continue; - - start = round_down(end - size, align); - - /* - * Don't allocate at 0x0. It will confuse code that - * checks pointers against NULL. - */ - if (start == 0x0) - continue; - - if (start > max_addr) - max_addr = start; - } - - if (!max_addr) - status = EFI_NOT_FOUND; - else { - status = efi_call_phys4(sys_table->boottime->allocate_pages, - EFI_ALLOCATE_ADDRESS, EFI_LOADER_DATA, - nr_pages, &max_addr); - if (status != EFI_SUCCESS) { - max = max_addr; - max_addr = 0; - goto again; - } - - *addr = max_addr; - } - -free_pool: - efi_call_phys1(sys_table->boottime->free_pool, map); - -fail: - return status; -} - -/* - * Allocate at the lowest possible address. - */ -static efi_status_t low_alloc(unsigned long size, unsigned long align, - unsigned long *addr) -{ - unsigned long map_size, desc_size; - efi_memory_desc_t *map; - efi_status_t status; - unsigned long nr_pages; - int i; - - status = __get_map(&map, &map_size, &desc_size); - if (status != EFI_SUCCESS) - goto fail; - - nr_pages = round_up(size, EFI_PAGE_SIZE) / EFI_PAGE_SIZE; - for (i = 0; i < map_size / desc_size; i++) { - efi_memory_desc_t *desc; - unsigned long m = (unsigned long)map; - u64 start, end; - - desc = (efi_memory_desc_t *)(m + (i * desc_size)); - - if (desc->type != EFI_CONVENTIONAL_MEMORY) - continue; - - if (desc->num_pages < nr_pages) - continue; - - start = desc->phys_addr; - end = start + desc->num_pages * (1UL << EFI_PAGE_SHIFT); - - /* - * Don't allocate at 0x0. It will confuse code that - * checks pointers against NULL. Skip the first 8 - * bytes so we start at a nice even number. - */ - if (start == 0x0) - start += 8; - - start = round_up(start, align); - if ((start + size) > end) - continue; - - status = efi_call_phys4(sys_table->boottime->allocate_pages, - EFI_ALLOCATE_ADDRESS, EFI_LOADER_DATA, - nr_pages, &start); - if (status == EFI_SUCCESS) { - *addr = start; - break; - } - } - if (i == map_size / desc_size) - status = EFI_NOT_FOUND; - -free_pool: - efi_call_phys1(sys_table->boottime->free_pool, map); -fail: - return status; -} - -static void low_free(unsigned long size, unsigned long addr) -{ - unsigned long nr_pages; - - nr_pages = round_up(size, EFI_PAGE_SIZE) / EFI_PAGE_SIZE; - efi_call_phys2(sys_table->boottime->free_pages, addr, nr_pages); -} static void find_bits(unsigned long mask, u8 *pos, u8 *size) { @@ -624,242 +420,6 @@ void setup_graphics(struct boot_params *boot_params) } } -struct initrd { - efi_file_handle_t *handle; - u64 size; -}; - -/* - * Check the cmdline for a LILO-style initrd= arguments. - * - * We only support loading an initrd from the same filesystem as the - * kernel image. - */ -static efi_status_t handle_ramdisks(efi_loaded_image_t *image, - struct setup_header *hdr) -{ - struct initrd *initrds; - unsigned long initrd_addr; - efi_guid_t fs_proto = EFI_FILE_SYSTEM_GUID; - u64 initrd_total; - efi_file_io_interface_t *io; - efi_file_handle_t *fh; - efi_status_t status; - int nr_initrds; - char *str; - int i, j, k; - - initrd_addr = 0; - initrd_total = 0; - - str = (char *)(unsigned long)hdr->cmd_line_ptr; - - j = 0; /* See close_handles */ - - if (!str || !*str) - return EFI_SUCCESS; - - for (nr_initrds = 0; *str; nr_initrds++) { - str = strstr(str, "initrd="); - if (!str) - break; - - str += 7; - - /* Skip any leading slashes */ - while (*str == '/' || *str == '\\') - str++; - - while (*str && *str != ' ' && *str != '\n') - str++; - } - - if (!nr_initrds) - return EFI_SUCCESS; - - status = efi_call_phys3(sys_table->boottime->allocate_pool, - EFI_LOADER_DATA, - nr_initrds * sizeof(*initrds), - &initrds); - if (status != EFI_SUCCESS) { - efi_printk("Failed to alloc mem for initrds\n"); - goto fail; - } - - str = (char *)(unsigned long)hdr->cmd_line_ptr; - for (i = 0; i < nr_initrds; i++) { - struct initrd *initrd; - efi_file_handle_t *h; - efi_file_info_t *info; - efi_char16_t filename_16[256]; - unsigned long info_sz; - efi_guid_t info_guid = EFI_FILE_INFO_ID; - efi_char16_t *p; - u64 file_sz; - - str = strstr(str, "initrd="); - if (!str) - break; - - str += 7; - - initrd = &initrds[i]; - p = filename_16; - - /* Skip any leading slashes */ - while (*str == '/' || *str == '\\') - str++; - - while (*str && *str != ' ' && *str != '\n') { - if ((u8 *)p >= (u8 *)filename_16 + sizeof(filename_16)) - break; - - if (*str == '/') { - *p++ = '\\'; - *str++; - } else { - *p++ = *str++; - } - } - - *p = '\0'; - - /* Only open the volume once. */ - if (!i) { - efi_boot_services_t *boottime; - - boottime = sys_table->boottime; - - status = efi_call_phys3(boottime->handle_protocol, - image->device_handle, &fs_proto, &io); - if (status != EFI_SUCCESS) { - efi_printk("Failed to handle fs_proto\n"); - goto free_initrds; - } - - status = efi_call_phys2(io->open_volume, io, &fh); - if (status != EFI_SUCCESS) { - efi_printk("Failed to open volume\n"); - goto free_initrds; - } - } - - status = efi_call_phys5(fh->open, fh, &h, filename_16, - EFI_FILE_MODE_READ, (u64)0); - if (status != EFI_SUCCESS) { - efi_printk("Failed to open initrd file: "); - efi_char16_printk(filename_16); - efi_printk("\n"); - goto close_handles; - } - - initrd->handle = h; - - info_sz = 0; - status = efi_call_phys4(h->get_info, h, &info_guid, - &info_sz, NULL); - if (status != EFI_BUFFER_TOO_SMALL) { - efi_printk("Failed to get initrd info size\n"); - goto close_handles; - } - -grow: - status = efi_call_phys3(sys_table->boottime->allocate_pool, - EFI_LOADER_DATA, info_sz, &info); - if (status != EFI_SUCCESS) { - efi_printk("Failed to alloc mem for initrd info\n"); - goto close_handles; - } - - status = efi_call_phys4(h->get_info, h, &info_guid, - &info_sz, info); - if (status == EFI_BUFFER_TOO_SMALL) { - efi_call_phys1(sys_table->boottime->free_pool, info); - goto grow; - } - - file_sz = info->file_size; - efi_call_phys1(sys_table->boottime->free_pool, info); - - if (status != EFI_SUCCESS) { - efi_printk("Failed to get initrd info\n"); - goto close_handles; - } - - initrd->size = file_sz; - initrd_total += file_sz; - } - - if (initrd_total) { - unsigned long addr; - - /* - * Multiple initrd's need to be at consecutive - * addresses in memory, so allocate enough memory for - * all the initrd's. - */ - status = high_alloc(initrd_total, 0x1000, - &initrd_addr, hdr->initrd_addr_max); - if (status != EFI_SUCCESS) { - efi_printk("Failed to alloc highmem for initrds\n"); - goto close_handles; - } - - /* We've run out of free low memory. */ - if (initrd_addr > hdr->initrd_addr_max) { - efi_printk("We've run out of free low memory\n"); - status = EFI_INVALID_PARAMETER; - goto free_initrd_total; - } - - addr = initrd_addr; - for (j = 0; j < nr_initrds; j++) { - u64 size; - - size = initrds[j].size; - while (size) { - u64 chunksize; - if (size > EFI_READ_CHUNK_SIZE) - chunksize = EFI_READ_CHUNK_SIZE; - else - chunksize = size; - status = efi_call_phys3(fh->read, - initrds[j].handle, - &chunksize, addr); - if (status != EFI_SUCCESS) { - efi_printk("Failed to read initrd\n"); - goto free_initrd_total; - } - addr += chunksize; - size -= chunksize; - } - - efi_call_phys1(fh->close, initrds[j].handle); - } - - } - - efi_call_phys1(sys_table->boottime->free_pool, initrds); - - hdr->ramdisk_image = initrd_addr; - hdr->ramdisk_size = initrd_total; - - return status; - -free_initrd_total: - low_free(initrd_total, initrd_addr); - -close_handles: - for (k = j; k < i; k++) - efi_call_phys1(fh->close, initrds[k].handle); -free_initrds: - efi_call_phys1(sys_table->boottime->free_pool, initrds); -fail: - hdr->ramdisk_image = 0; - hdr->ramdisk_size = 0; - - return status; -} /* * Because the x86 boot code expects to be passed a boot_params we diff --git a/arch/x86/boot/compressed/eboot.h b/arch/x86/boot/compressed/eboot.h index e5b0a8f..faa0bdf 100644 --- a/arch/x86/boot/compressed/eboot.h +++ b/arch/x86/boot/compressed/eboot.h @@ -62,10 +62,4 @@ struct efi_uga_draw_protocol { void *blt; }; -struct efi_simple_text_output_protocol { - void *reset; - void *output_string; - void *test_string; -}; - #endif /* BOOT_COMPRESSED_EBOOT_H */ diff --git a/drivers/firmware/efi/efi-stub-helper.c b/drivers/firmware/efi/efi-stub-helper.c new file mode 100644 index 0000000..47891bd --- /dev/null +++ b/drivers/firmware/efi/efi-stub-helper.c @@ -0,0 +1,463 @@ +/* + * Helper functions used by the EFI stub on multiple + * architectures. This should be #included by the EFI stub + * implementation files. + * + * Copyright 2011 Intel Corporation; author Matt Fleming + * + * This file is part of the Linux kernel, and is made available + * under the terms of the GNU General Public License version 2. + * + */ + + +struct initrd { + efi_file_handle_t *handle; + u64 size; +}; + + + + +static void efi_char16_printk(efi_char16_t *str) +{ + struct efi_simple_text_output_protocol *out; + + out = (struct efi_simple_text_output_protocol *)sys_table->con_out; + efi_call_phys2(out->output_string, out, str); +} + +static void efi_printk(char *str) +{ + char *s8; + + for (s8 = str; *s8; s8++) { + efi_char16_t ch[2] = { 0 }; + + ch[0] = *s8; + if (*s8 == '\n') { + efi_char16_t nl[2] = { '\r', 0 }; + efi_char16_printk(nl); + } + + efi_char16_printk(ch); + } +} + + +static efi_status_t __get_map(efi_memory_desc_t **map, unsigned long *map_size, + unsigned long *desc_size) +{ + efi_memory_desc_t *m = NULL; + efi_status_t status; + unsigned long key; + u32 desc_version; + + *map_size = sizeof(*m) * 32; +again: + /* + * Add an additional efi_memory_desc_t because we're doing an + * allocation which may be in a new descriptor region. + */ + *map_size += sizeof(*m); + status = efi_call_phys3(sys_table->boottime->allocate_pool, + EFI_LOADER_DATA, *map_size, (void **)&m); + if (status != EFI_SUCCESS) + goto fail; + + status = efi_call_phys5(sys_table->boottime->get_memory_map, map_size, + m, &key, desc_size, &desc_version); + if (status == EFI_BUFFER_TOO_SMALL) { + efi_call_phys1(sys_table->boottime->free_pool, m); + goto again; + } + + if (status != EFI_SUCCESS) + efi_call_phys1(sys_table->boottime->free_pool, m); + +fail: + *map = m; + return status; +} + +/* + * Allocate at the highest possible address that is not above 'max'. + */ +static efi_status_t high_alloc(unsigned long size, unsigned long align, + unsigned long *addr, unsigned long max) +{ + unsigned long map_size, desc_size; + efi_memory_desc_t *map; + efi_status_t status; + unsigned long nr_pages; + u64 max_addr = 0; + int i; + + status = __get_map(&map, &map_size, &desc_size); + if (status != EFI_SUCCESS) + goto fail; + + nr_pages = round_up(size, EFI_PAGE_SIZE) / EFI_PAGE_SIZE; +again: + for (i = 0; i < map_size / desc_size; i++) { + efi_memory_desc_t *desc; + unsigned long m = (unsigned long)map; + u64 start, end; + + desc = (efi_memory_desc_t *)(m + (i * desc_size)); + if (desc->type != EFI_CONVENTIONAL_MEMORY) + continue; + + if (desc->num_pages < nr_pages) + continue; + + start = desc->phys_addr; + end = start + desc->num_pages * (1UL << EFI_PAGE_SHIFT); + + if ((start + size) > end || (start + size) > max) + continue; + + if (end - size > max) + end = max; + + if (round_down(end - size, align) < start) + continue; + + start = round_down(end - size, align); + + /* + * Don't allocate at 0x0. It will confuse code that + * checks pointers against NULL. + */ + if (start == 0x0) + continue; + + if (start > max_addr) + max_addr = start; + } + + if (!max_addr) + status = EFI_NOT_FOUND; + else { + status = efi_call_phys4(sys_table->boottime->allocate_pages, + EFI_ALLOCATE_ADDRESS, EFI_LOADER_DATA, + nr_pages, &max_addr); + if (status != EFI_SUCCESS) { + max = max_addr; + max_addr = 0; + goto again; + } + + *addr = max_addr; + } + +free_pool: + efi_call_phys1(sys_table->boottime->free_pool, map); + +fail: + return status; +} + +/* + * Allocate at the lowest possible address. + */ +static efi_status_t low_alloc(unsigned long size, unsigned long align, + unsigned long *addr) +{ + unsigned long map_size, desc_size; + efi_memory_desc_t *map; + efi_status_t status; + unsigned long nr_pages; + int i; + + status = __get_map(&map, &map_size, &desc_size); + if (status != EFI_SUCCESS) + goto fail; + + nr_pages = round_up(size, EFI_PAGE_SIZE) / EFI_PAGE_SIZE; + for (i = 0; i < map_size / desc_size; i++) { + efi_memory_desc_t *desc; + unsigned long m = (unsigned long)map; + u64 start, end; + + desc = (efi_memory_desc_t *)(m + (i * desc_size)); + + if (desc->type != EFI_CONVENTIONAL_MEMORY) + continue; + + if (desc->num_pages < nr_pages) + continue; + + start = desc->phys_addr; + end = start + desc->num_pages * (1UL << EFI_PAGE_SHIFT); + + /* + * Don't allocate at 0x0. It will confuse code that + * checks pointers against NULL. Skip the first 8 + * bytes so we start at a nice even number. + */ + if (start == 0x0) + start += 8; + + start = round_up(start, align); + if ((start + size) > end) + continue; + + status = efi_call_phys4(sys_table->boottime->allocate_pages, + EFI_ALLOCATE_ADDRESS, EFI_LOADER_DATA, + nr_pages, &start); + if (status == EFI_SUCCESS) { + *addr = start; + break; + } + } + + if (i == map_size / desc_size) + status = EFI_NOT_FOUND; + +free_pool: + efi_call_phys1(sys_table->boottime->free_pool, map); +fail: + return status; +} + +static void low_free(unsigned long size, unsigned long addr) +{ + unsigned long nr_pages; + + nr_pages = round_up(size, EFI_PAGE_SIZE) / EFI_PAGE_SIZE; + efi_call_phys2(sys_table->boottime->free_pages, addr, nr_pages); +} + + +/* + * Check the cmdline for a LILO-style initrd= arguments. + * + * We only support loading an initrd from the same filesystem as the + * kernel image. + */ +static efi_status_t handle_ramdisks(efi_loaded_image_t *image, + struct setup_header *hdr) +{ + struct initrd *initrds; + unsigned long initrd_addr; + efi_guid_t fs_proto = EFI_FILE_SYSTEM_GUID; + u64 initrd_total; + efi_file_io_interface_t *io; + efi_file_handle_t *fh; + efi_status_t status; + int nr_initrds; + char *str; + int i, j, k; + + initrd_addr = 0; + initrd_total = 0; + + str = (char *)(unsigned long)hdr->cmd_line_ptr; + + j = 0; /* See close_handles */ + + if (!str || !*str) + return EFI_SUCCESS; + + for (nr_initrds = 0; *str; nr_initrds++) { + str = strstr(str, "initrd="); + if (!str) + break; + + str += 7; + + /* Skip any leading slashes */ + while (*str == '/' || *str == '\\') + str++; + + while (*str && *str != ' ' && *str != '\n') + str++; + } + + if (!nr_initrds) + return EFI_SUCCESS; + + status = efi_call_phys3(sys_table->boottime->allocate_pool, + EFI_LOADER_DATA, + nr_initrds * sizeof(*initrds), + &initrds); + if (status != EFI_SUCCESS) { + efi_printk("Failed to alloc mem for initrds\n"); + goto fail; + } + + str = (char *)(unsigned long)hdr->cmd_line_ptr; + for (i = 0; i < nr_initrds; i++) { + struct initrd *initrd; + efi_file_handle_t *h; + efi_file_info_t *info; + efi_char16_t filename_16[256]; + unsigned long info_sz; + efi_guid_t info_guid = EFI_FILE_INFO_ID; + efi_char16_t *p; + u64 file_sz; + + str = strstr(str, "initrd="); + if (!str) + break; + + str += 7; + + initrd = &initrds[i]; + p = filename_16; + + /* Skip any leading slashes */ + while (*str == '/' || *str == '\\') + str++; + + while (*str && *str != ' ' && *str != '\n') { + if ((u8 *)p >= (u8 *)filename_16 + sizeof(filename_16)) + break; + + if (*str == '/') { + *p++ = '\\'; + *str++; + } else { + *p++ = *str++; + } + } + + *p = '\0'; + + /* Only open the volume once. */ + if (!i) { + efi_boot_services_t *boottime; + + boottime = sys_table->boottime; + + status = efi_call_phys3(boottime->handle_protocol, + image->device_handle, &fs_proto, &io); + if (status != EFI_SUCCESS) { + efi_printk("Failed to handle fs_proto\n"); + goto free_initrds; + } + + status = efi_call_phys2(io->open_volume, io, &fh); + if (status != EFI_SUCCESS) { + efi_printk("Failed to open volume\n"); + goto free_initrds; + } + } + + status = efi_call_phys5(fh->open, fh, &h, filename_16, + EFI_FILE_MODE_READ, (u64)0); + if (status != EFI_SUCCESS) { + efi_printk("Failed to open initrd file: "); + efi_char16_printk(filename_16); + efi_printk("\n"); + goto close_handles; + } + + initrd->handle = h; + + info_sz = 0; + status = efi_call_phys4(h->get_info, h, &info_guid, + &info_sz, NULL); + if (status != EFI_BUFFER_TOO_SMALL) { + efi_printk("Failed to get initrd info size\n"); + goto close_handles; + } + +grow: + status = efi_call_phys3(sys_table->boottime->allocate_pool, + EFI_LOADER_DATA, info_sz, &info); + if (status != EFI_SUCCESS) { + efi_printk("Failed to alloc mem for initrd info\n"); + goto close_handles; + } + + status = efi_call_phys4(h->get_info, h, &info_guid, + &info_sz, info); + if (status == EFI_BUFFER_TOO_SMALL) { + efi_call_phys1(sys_table->boottime->free_pool, info); + goto grow; + } + + file_sz = info->file_size; + efi_call_phys1(sys_table->boottime->free_pool, info); + + if (status != EFI_SUCCESS) { + efi_printk("Failed to get initrd info\n"); + goto close_handles; + } + + initrd->size = file_sz; + initrd_total += file_sz; + } + + if (initrd_total) { + unsigned long addr; + + /* + * Multiple initrd's need to be at consecutive + * addresses in memory, so allocate enough memory for + * all the initrd's. + */ + status = high_alloc(initrd_total, 0x1000, + &initrd_addr, hdr->initrd_addr_max); + if (status != EFI_SUCCESS) { + efi_printk("Failed to alloc highmem for initrds\n"); + goto close_handles; + } + + /* We've run out of free low memory. */ + if (initrd_addr > hdr->initrd_addr_max) { + efi_printk("We've run out of free low memory\n"); + status = EFI_INVALID_PARAMETER; + goto free_initrd_total; + } + + addr = initrd_addr; + for (j = 0; j < nr_initrds; j++) { + u64 size; + + size = initrds[j].size; + while (size) { + u64 chunksize; + if (size > EFI_READ_CHUNK_SIZE) + chunksize = EFI_READ_CHUNK_SIZE; + else + chunksize = size; + status = efi_call_phys3(fh->read, + initrds[j].handle, + &chunksize, addr); + if (status != EFI_SUCCESS) { + efi_printk("Failed to read initrd\n"); + goto free_initrd_total; + } + addr += chunksize; + size -= chunksize; + } + + efi_call_phys1(fh->close, initrds[j].handle); + } + + } + + efi_call_phys1(sys_table->boottime->free_pool, initrds); + + hdr->ramdisk_image = initrd_addr; + hdr->ramdisk_size = initrd_total; + + return status; + +free_initrd_total: + low_free(initrd_total, initrd_addr); + +close_handles: + for (k = j; k < i; k++) + efi_call_phys1(fh->close, initrds[k].handle); +free_initrds: + efi_call_phys1(sys_table->boottime->free_pool, initrds); +fail: + hdr->ramdisk_image = 0; + hdr->ramdisk_size = 0; + + return status; +} diff --git a/include/linux/efi.h b/include/linux/efi.h index 5f8f176..51f5641 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -784,6 +784,14 @@ struct efivar_entry { struct kobject kobj; }; + +struct efi_simple_text_output_protocol { + void *reset; + void *output_string; + void *test_string; +}; + + extern struct list_head efivar_sysfs_list; static inline void