Re: [PATCH] efi: Add esrt support.
From: Dave Young <hidden>
Date: 2015-02-26 08:00:33
Possibly related (same subject, not in this thread)
- 2015-04-30 · Re: [PATCH] efi: Add esrt support. · Matt Fleming <hidden>
- 2015-04-28 · [PATCH] efi: Add esrt support. · Peter Jones <hidden>
- 2015-02-26 · [PATCH] efi: Add esrt support. · Peter Jones <hidden>
- 2015-02-19 · [PATCH] efi: Add esrt support. · Peter Jones <hidden>
- 2015-01-20 · [PATCH] efi: Add esrt support. · Peter Jones <hidden>
On 02/19/15 at 09:54am, Peter Jones wrote:
Add sysfs files for the EFI System Resource Table (ESRT) under /sys/firmware/efi/esrt and for each EFI System Resource Entry under entries/ as a subdir. The EFI System Resource Table (ESRT) provides a read-only catalog of system components for which the system accepts firmware upgrades via UEFI's "Capsule Update" feature. This module allows userland utilities to evaluate what firmware updates can be applied to this system, and potentially arrange for those updates to occur. The ESRT is described as part of the UEFI specification, in version 2.5 which should be available from http://uefi.org/specifications in early 2015. If you're a member of the UEFI Forum, information about its addition to the standard is available as UEFI Mantis 1090. For some hardware platforms, additional restrictions may be found at http://msdn.microsoft.com/en-us/library/windows/hardware/jj128256.aspx , and additional documentation may be found at http://download.microsoft.com/download/5/F/5/5F5D16CD-2530-4289-8019-94C6A20BED3C/windows-uefi-firmware-update-platform.docx . Signed-off-by: Peter Jones <redacted> --- arch/x86/platform/efi/efi.c | 2 + drivers/firmware/efi/Makefile | 2 +- drivers/firmware/efi/efi.c | 68 ++++++- drivers/firmware/efi/esrt.c | 441 ++++++++++++++++++++++++++++++++++++++++++ include/linux/efi.h | 8 + 5 files changed, 519 insertions(+), 2 deletions(-) create mode 100644 drivers/firmware/efi/esrt.c
Update documentation under Documentation/ABI/testing/? [snip]
quoted hunk
/*@@ -95,6 +96,8 @@ static ssize_t systab_show(struct kobject *kobj, str += sprintf(str, "BOOTINFO=0x%lx\n", efi.boot_info); if (efi.uga != EFI_INVALID_TABLE_ADDR) str += sprintf(str, "UGA=0x%lx\n", efi.uga); + if (efi.esrt != EFI_INVALID_TABLE_ADDR) + str += sprintf(str, "ESRT=0x%lx\n", efi.esrt); return str - buf; }
Add more output in /sys/firmware/efi/systab is wrong, one table address should have one file under /sys/firmware/efi/, we have created the systab in the wrong way but we should not continue to add things.. Thanks Dave