From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933206AbdDEKnY (ORCPT ); Wed, 5 Apr 2017 06:43:24 -0400 Received: from terminus.zytor.com ([65.50.211.136]:58403 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754002AbdDEKnN (ORCPT ); Wed, 5 Apr 2017 06:43:13 -0400 Date: Wed, 5 Apr 2017 03:38:37 -0700 From: tip-bot for Ard Biesheuvel Message-ID: Cc: ard.biesheuvel@linaro.org, matt@codeblueprint.co.uk, peterz@infradead.org, hpa@zytor.com, torvalds@linux-foundation.org, linux-kernel@vger.kernel.org, mark.rutland@arm.com, mingo@kernel.org, tglx@linutronix.de Reply-To: ard.biesheuvel@linaro.org, matt@codeblueprint.co.uk, hpa@zytor.com, peterz@infradead.org, mark.rutland@arm.com, linux-kernel@vger.kernel.org, torvalds@linux-foundation.org, mingo@kernel.org, tglx@linutronix.de In-Reply-To: <20170404160910.28115-2-ard.biesheuvel@linaro.org> References: <20170404160910.28115-2-ard.biesheuvel@linaro.org> To: linux-tip-commits@vger.kernel.org Subject: [tip:efi/core] efi/libstub/arm/arm64: Disable debug prints on 'quiet' cmdline arg Git-Commit-ID: eeff7d634f4750306785be709ca444140c29b043 X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: eeff7d634f4750306785be709ca444140c29b043 Gitweb: http://git.kernel.org/tip/eeff7d634f4750306785be709ca444140c29b043 Author: Ard Biesheuvel AuthorDate: Tue, 4 Apr 2017 17:09:09 +0100 Committer: Ingo Molnar CommitDate: Wed, 5 Apr 2017 12:27:28 +0200 efi/libstub/arm/arm64: Disable debug prints on 'quiet' cmdline arg The EFI stub currently prints a number of diagnostic messages that do not carry a lot of information. Since these prints are not controlled by 'loglevel' or other command line parameters, and since they appear on the EFI framebuffer as well (if enabled), it would be nice if we could turn them off. So let's add support for the 'quiet' command line parameter in the stub, and disable the non-error prints if it is passed. Signed-off-by: Ard Biesheuvel Acked-by: Mark Rutland Cc: Linus Torvalds Cc: Matt Fleming Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: bhe@redhat.com Cc: bhsharma@redhat.com Cc: bp@alien8.de Cc: eugene@hp.com Cc: evgeny.kalugin@intel.com Cc: jhugo@codeaurora.org Cc: leif.lindholm@linaro.org Cc: linux-efi@vger.kernel.org Cc: roy.franz@cavium.com Cc: rruigrok@codeaurora.org Link: http://lkml.kernel.org/r/20170404160910.28115-2-ard.biesheuvel@linaro.org Signed-off-by: Ingo Molnar --- drivers/firmware/efi/libstub/arm-stub.c | 20 ++++++++++---------- drivers/firmware/efi/libstub/arm32-stub.c | 2 ++ drivers/firmware/efi/libstub/efi-stub-helper.c | 9 +++++++++ drivers/firmware/efi/libstub/efistub.h | 7 +++++++ drivers/firmware/efi/libstub/secureboot.c | 2 ++ include/linux/efi.h | 3 --- 6 files changed, 30 insertions(+), 13 deletions(-) diff --git a/drivers/firmware/efi/libstub/arm-stub.c b/drivers/firmware/efi/libstub/arm-stub.c index ac3222f..657bb72 100644 --- a/drivers/firmware/efi/libstub/arm-stub.c +++ b/drivers/firmware/efi/libstub/arm-stub.c @@ -116,8 +116,6 @@ unsigned long efi_entry(void *handle, efi_system_table_t *sys_table, if (sys_table->hdr.signature != EFI_SYSTEM_TABLE_SIGNATURE) goto fail; - pr_efi(sys_table, "Booting Linux Kernel...\n"); - status = check_platform_features(sys_table); if (status != EFI_SUCCESS) goto fail; @@ -151,6 +149,16 @@ unsigned long efi_entry(void *handle, efi_system_table_t *sys_table, goto fail; } + if (IS_ENABLED(CONFIG_CMDLINE_EXTEND) || + IS_ENABLED(CONFIG_CMDLINE_FORCE) || + cmdline_size == 0) + efi_parse_options(CONFIG_CMDLINE); + + if (!IS_ENABLED(CONFIG_CMDLINE_FORCE) && cmdline_size > 0) + efi_parse_options(cmdline_ptr); + + pr_efi(sys_table, "Booting Linux Kernel...\n"); + si = setup_graphics(sys_table); status = handle_kernel_image(sys_table, image_addr, &image_size, @@ -162,14 +170,6 @@ unsigned long efi_entry(void *handle, efi_system_table_t *sys_table, goto fail_free_cmdline; } - if (IS_ENABLED(CONFIG_CMDLINE_EXTEND) || - IS_ENABLED(CONFIG_CMDLINE_FORCE) || - cmdline_size == 0) - efi_parse_options(CONFIG_CMDLINE); - - if (!IS_ENABLED(CONFIG_CMDLINE_FORCE) && cmdline_size > 0) - efi_parse_options(cmdline_ptr); - secure_boot = efi_get_secureboot(sys_table); /* diff --git a/drivers/firmware/efi/libstub/arm32-stub.c b/drivers/firmware/efi/libstub/arm32-stub.c index 18a8b5e..becbda4 100644 --- a/drivers/firmware/efi/libstub/arm32-stub.c +++ b/drivers/firmware/efi/libstub/arm32-stub.c @@ -9,6 +9,8 @@ #include #include +#include "efistub.h" + efi_status_t check_platform_features(efi_system_table_t *sys_table_arg) { int block; diff --git a/drivers/firmware/efi/libstub/efi-stub-helper.c b/drivers/firmware/efi/libstub/efi-stub-helper.c index 2e17d2b..b018436 100644 --- a/drivers/firmware/efi/libstub/efi-stub-helper.c +++ b/drivers/firmware/efi/libstub/efi-stub-helper.c @@ -33,11 +33,16 @@ static unsigned long __chunk_size = EFI_READ_CHUNK_SIZE; static int __section(.data) __nokaslr; +static int __section(.data) __quiet; int __pure nokaslr(void) { return __nokaslr; } +int __pure is_quiet(void) +{ + return __quiet; +} #define EFI_MMAP_NR_SLACK_SLOTS 8 @@ -424,6 +429,10 @@ efi_status_t efi_parse_options(char const *cmdline) if (str == cmdline || (str && str > cmdline && *(str - 1) == ' ')) __nokaslr = 1; + str = strstr(cmdline, "quiet"); + if (str == cmdline || (str && str > cmdline && *(str - 1) == ' ')) + __quiet = 1; + /* * If no EFI parameters were specified on the cmdline we've got * nothing to do. diff --git a/drivers/firmware/efi/libstub/efistub.h b/drivers/firmware/efi/libstub/efistub.h index a7a2a2c..83f268c 100644 --- a/drivers/firmware/efi/libstub/efistub.h +++ b/drivers/firmware/efi/libstub/efistub.h @@ -25,6 +25,13 @@ #endif extern int __pure nokaslr(void); +extern int __pure is_quiet(void); + +#define pr_efi(sys_table, msg) do { \ + if (!is_quiet()) efi_printk(sys_table, "EFI stub: "msg); \ +} while (0) + +#define pr_efi_err(sys_table, msg) efi_printk(sys_table, "EFI stub: ERROR: "msg) void efi_char16_printk(efi_system_table_t *, efi_char16_t *); diff --git a/drivers/firmware/efi/libstub/secureboot.c b/drivers/firmware/efi/libstub/secureboot.c index 5da36e5..8c34d50 100644 --- a/drivers/firmware/efi/libstub/secureboot.c +++ b/drivers/firmware/efi/libstub/secureboot.c @@ -12,6 +12,8 @@ #include #include +#include "efistub.h" + /* BIOS variables */ static const efi_guid_t efi_variable_guid = EFI_GLOBAL_VARIABLE_GUID; static const efi_char16_t const efi_SecureBoot_name[] = { diff --git a/include/linux/efi.h b/include/linux/efi.h index e485e87..ec36f42 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -1435,9 +1435,6 @@ static inline int efi_runtime_map_copy(void *buf, size_t bufsz) /* prototypes shared between arch specific and generic stub code */ -#define pr_efi(sys_table, msg) efi_printk(sys_table, "EFI stub: "msg) -#define pr_efi_err(sys_table, msg) efi_printk(sys_table, "EFI stub: ERROR: "msg) - void efi_printk(efi_system_table_t *sys_table_arg, char *str); void efi_free(efi_system_table_t *sys_table_arg, unsigned long size,