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efi_loader: add macro for const EFI runtime data

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Add macro __efi_runtime_rodata, for const variables with similar purpose
as those using __efi_runtime_data.

Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This commit is contained in:
Marek Behún 2021-05-20 13:23:58 +02:00 • committed by Tom Rini
parent 8283697311
commit 15f537ccf9
1 changed files with 17 additions and 0 deletions
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17
include/efi_loader.h
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@ -694,6 +694,22 @@ ssize_t efi_dp_check_length(const struct efi_device_path *dp,
*/ */
#define __efi_runtime_data __section(".data.efi_runtime") #define __efi_runtime_data __section(".data.efi_runtime")
/**
* __efi_runtime_rodata - declares a read-only variable for EFI runtime section
*
* This macro indicates that a variable is read-only (const) and should go into
* the EFI runtime section, and thus still be available when the OS is running.
*
* Only use on variables also declared const.
*
* Example:
*
* ::
*
* static const __efi_runtime_rodata my_const_table[] = { 1, 2, 3 };
*/
#define __efi_runtime_rodata __section(".rodata.efi_runtime")
/** /**
* __efi_runtime - declares a function for EFI runtime section * __efi_runtime - declares a function for EFI runtime section
* *
@ -911,6 +927,7 @@ efi_status_t efi_launch_capsules(void);
/* Without CONFIG_EFI_LOADER we don't have a runtime section, stub it out */ /* Without CONFIG_EFI_LOADER we don't have a runtime section, stub it out */
#define __efi_runtime_data #define __efi_runtime_data
#define __efi_runtime_rodata
#define __efi_runtime #define __efi_runtime
static inline efi_status_t efi_add_runtime_mmio(void *mmio_ptr, u64 len) static inline efi_status_t efi_add_runtime_mmio(void *mmio_ptr, u64 len)
{ {