[PATCH u-boot 14/39] lib: crc32: put the crc_table variable into efi_runtime_rodata section

[Marek Behún]

When compiling with LTO, the compiler fails with an error saying that
`crc_table` causes a section type conflict with `efi_var_buf`.

This is because both are declared to be in the same section (via macro
`__efi_runtime_data`), but one is const while the other is not.

Put this variable into the section .rodata.efi_runtime, instead of
.data.efi_runtime.

Signed-off-by: Marek Behún <marek.behun at nic.cz>
---
 include/efi_loader.h | 2 ++
 lib/crc32.c          | 3 ++-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/include/efi_loader.h b/include/efi_loader.h
index a8281b3c95..b1e5d2e13e 100644
--- a/include/efi_loader.h
+++ b/include/efi_loader.h
@@ -671,6 +671,7 @@ ssize_t efi_dp_check_length(const struct efi_device_path *dp,
  * section and thus still be available when the OS is running
  */
 #define __efi_runtime_data __section(".data.efi_runtime")
+#define __efi_runtime_rodata __section(".rodata.efi_runtime")
 #define __efi_runtime __section(".text.efi_runtime")
 
 /* Indicate supported runtime services */
@@ -870,6 +871,7 @@ efi_status_t efi_launch_capsules(void);
 
 /* Without CONFIG_EFI_LOADER we don't have a runtime section, stub it out */
 #define __efi_runtime_data
+#define __efi_runtime_rodata
 #define __efi_runtime
 static inline efi_status_t efi_add_runtime_mmio(void *mmio_ptr, u64 len)
 {
diff --git a/lib/crc32.c b/lib/crc32.c
index e9be3bf386..f2acc107fe 100644
--- a/lib/crc32.c
+++ b/lib/crc32.c
@@ -26,6 +26,7 @@
 #ifdef USE_HOSTCC
 #define __efi_runtime
 #define __efi_runtime_data
+#define __efi_runtime_rodata
 #endif
 
 #define tole(x) cpu_to_le32(x)
@@ -88,7 +89,7 @@ static void __efi_runtime make_crc_table(void)
  * Table of CRC-32's of all single-byte values (made by make_crc_table)
  */
 
-static const uint32_t __efi_runtime_data crc_table[256] = {
+static const uint32_t __efi_runtime_rodata crc_table[256] = {
 tole(0x00000000L), tole(0x77073096L), tole(0xee0e612cL), tole(0x990951baL),
 tole(0x076dc419L), tole(0x706af48fL), tole(0xe963a535L), tole(0x9e6495a3L),
 tole(0x0edb8832L), tole(0x79dcb8a4L), tole(0xe0d5e91eL), tole(0x97d2d988L),
-- 
2.26.2