lib: Remove the BOOTBLOCK_CUSTOM compile guard

This CL allows that everyone can use main() in lib/bootblock.c
even if you select CONFIG_BOOTBLOCK_CUSTOM. I also rename main
functions used in some soc/ to avoid the collision with the
main function defined at lib/bootblock.c.

Change-Id: I0575c9d1ce9dea9facfcc86760dff4deee9c1e29
Signed-off-by: Asami Doi <d0iasm.pub@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34250
Reviewed-by: Julius Werner <jwerner@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/arch/mips/bootblock.S

@@ -33,7 +33,7 @@ _start:
 	addi	$t0, $t0, 4
 
 	/* Run main */
-	b	main
+	b	mips_main
 
 	/*
 	 * Should never return from main. Make sure there is no branch in the

src/arch/mips/bootblock_simple.c

@@ -19,7 +19,10 @@
 #include <halt.h>
 #include <program_loading.h>
 
-void main(void)
+/* called from assembly in bootblock.S */
+void mips_main(void);
+
+void mips_main(void)
 {
 	bootblock_cpu_init();
 

src/lib/Makefile.inc

@@ -32,10 +32,7 @@ decompressor-y += memcmp.c
 decompressor-y += prog_ops.c
 decompressor-$(CONFIG_COLLECT_TIMESTAMPS) += timestamp.c
 
-ifneq ($(CONFIG_BOOTBLOCK_CUSTOM),y)
 bootblock-y += bootblock.c
-endif
-
 bootblock-y += prog_loaders.c
 bootblock-y += prog_ops.c
 bootblock-y += cbfs.c

src/mainboard/emulation/qemu-power8/bootblock.c

@@ -17,10 +17,12 @@
 #include <console/console.h>
 #include <program_loading.h>
 
+void qemu_power8_main(void);
+
 /* The qemu part of all this is very, very non-hardware like.
  * So it gets its own bootblock.
  */
-void main(void)
+void qemu_power8_main(void)
 {
 	if (CONFIG(BOOTBLOCK_CONSOLE)) {
 		console_init();

src/soc/nvidia/tegra124/bootblock.c

@@ -26,6 +26,9 @@
 #include <timestamp.h>
 #include <vendorcode/google/chromeos/chromeos.h>
 
+/* called from assembly in bootblock_asm.S */
+void tegra124_main(void);
+
 static void run_next_stage(void *entry)
 {
 	ASSERT(entry);
@@ -41,7 +44,7 @@ static void run_next_stage(void *entry)
 	clock_halt_avp();
 }
 
-void main(void)
+void tegra124_main(void)
 {
 	// enable pinmux clamp inputs
 	clamp_tristate_inputs();

src/soc/nvidia/tegra124/bootblock_asm.S

@@ -66,5 +66,5 @@ call_bootblock:
 	 * Thumb. However, "b" will not and GCC may attempt to create a
 	 * wrapper which is currently broken.
 	 */
-	bl	main
+	bl	tegra124_main
 ENDPROC(_start)

src/soc/nvidia/tegra210/bootblock.c

@@ -31,6 +31,9 @@
 #define ODMDATA_OFFSET_IN_BCT	0x508
 #define TEGRA_SRAM_MAX		(TEGRA_SRAM_BASE + TEGRA_SRAM_SIZE)
 
+/* called from assembly in bootblock_asm.S */
+void tegra210_main(void);
+
 static void save_odmdata(void)
 {
 	struct tegra_pmc_regs *pmc = (struct tegra_pmc_regs*)TEGRA_PMC_BASE;
@@ -155,7 +158,7 @@ static void mbist_workaround(void)
 	}
 }
 
-void main(void)
+void tegra210_main(void)
 {
 	// enable JTAG at the earliest stage
 	enable_jtag();

src/soc/nvidia/tegra210/bootblock_asm.S

@@ -37,5 +37,5 @@ ENTRY(_start)
 	 */
 	msr	cpsr_cxf, #0xdf
 
-	stack_init stack_top=_estack stack_bottom=_stack seed=1 func=main
+	stack_init stack_top=_estack stack_bottom=_stack seed=1 func=tegra210_main
 ENDPROC(_start)