treewide: rework linker symbol declarations in sections header
1. Convert all linker symbols to char[] type so that we can get the
corresponding address by calling array name 'var' or its address
'&var'. In this way, we can avoid some potential issues[1].
2. Remove unused symbol '_TEXT_BASE'. It has been abandoned and has
not been referenced by any source code.
3. Move '__data_end' to the arch x86's own sections header as it's
only used by x86 arch.
4. Remove some duplicate declared linker symbols. Now we use the
standard header file to declare them.
[1] This patch fixes the boot failure on MIPS target. Error log:
SPL: Image overlaps SPL
Fixes: 1b8a1be1a1f1 ("spl: spl_legacy: Fix spl_end address")
Signed-off-by: Shiji Yang <yangshiji66@outlook.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/board/advantech/imx8qm_dmsse20_a1/spl.c b/board/advantech/imx8qm_dmsse20_a1/spl.c
index f36caec..e8959ed 100644
--- a/board/advantech/imx8qm_dmsse20_a1/spl.c
+++ b/board/advantech/imx8qm_dmsse20_a1/spl.c
@@ -14,6 +14,7 @@
#include <firmware/imx/sci/sci.h>
#include <asm/arch/imx8-pins.h>
#include <asm/arch/iomux.h>
+#include <asm/sections.h>
#include <fsl_esdhc_imx.h>
DECLARE_GLOBAL_DATA_PTR;