rom: ci: build xtensa ROM images for CI boot testing.

Some platforms like APL, CNL and ICL have a ROM that read the manifest
and loads the boot loader. This builds a simple ROM so that qemu can
boot APL, CNL and ICL firmware images for CI boot testing.

Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>

configure.ac

@@ -413,6 +413,8 @@ AM_CONDITIONAL(BUILD_BOOTLOADER,  test "$FW_NAME" = "apl" -o "$FW_NAME" = "cnl"
 AM_CONDITIONAL(BUILD_CAVS,  test "$FW_NAME" = "apl" -o "$FW_NAME" = "cnl" -o "$FW_NAME" = "icl" -o "$FW_NAME" = "sue" -o "$FW_NAME" = "skl" -o "$FW_NAME" = "kbl")
 AM_CONDITIONAL(BUILD_MODULE,  test "$FW_NAME" = "apl" -o "$FW_NAME" = "cnl" -o "$FW_NAME" = "icl" -o "$FW_NAME" = "sue" -o "$FW_NAME" = "skl" -o "$FW_NAME" = "kbl")
 AM_CONDITIONAL(BUILD_APL_SSP,  test "$FW_NAME" = "apl" -o "$FW_NAME" = "cnl" -o "$FW_NAME" = "icl" -o "$FW_NAME" = "sue" -o "$FW_NAME" = "skl" -o "$FW_NAME" = "kbl")
+AM_CONDITIONAL(BUILD_VM_ROM,  test "$FW_NAME" = "apl" -o "$FW_NAME" = "cnl" -o "$FW_NAME" = "icl" -o "$FW_NAME" = "sue" -o "$FW_NAME" = "skl" -o "$FW_NAME" = "kbl")
+
 
 # DSP core support (Optional)
 AC_ARG_WITH([dsp-core],
@@ -427,6 +429,9 @@ case "$with_dsp_core" in
 
 esac
 
+PLATFORM_ROM_LDSCRIPT="rom.x"
+AC_SUBST(PLATFORM_ROM_LDSCRIPT)
+
 PLATFORM_BOOT_LDR_LDSCRIPT="boot_ldr.x"
 AC_SUBST(PLATFORM_BOOT_LDR_LDSCRIPT)
 

src/arch/xtensa/Makefile.am

@@ -202,6 +202,66 @@ RIMAGE_BOOT_FLAGS += boot_ldr-$(FW_NAME)
 BIN_FLAGS +=boot_ldr-local
 endif
 
+if BUILD_VM_ROM
+
+# ROM
+noinst_PROGRAMS += \
+	rom
+
+LINK_ROM_SCRIPT = ../../platform/$(PLATFORM)/$(PLATFORM_ROM_LDSCRIPT)
+BUILT_SOURCES += $(LINK_ROM_SCRIPT)
+CLEANFILES += $(LINK_ROM_SCRIPT)
+
+nodist_rom_SOURCES = $(LINK_ROM_SCRIPT).in
+$(LINK_ROM_SCRIPT): Makefile $(LINK_ROM_SCRIPT).in $(LINK_DEPS)
+	cat $(LINK_ROM_SCRIPT).in | $(CPP) -P $(PLATFORM_INCDIR) $(SOF_INCDIR) $(ARCH_INCDIR) - >$@
+
+rom_LDADD = \
+	-lgcc
+
+# SMP ROM uses UP CRT1
+if BUILD_XTENSA_SMP
+rom_SOURCES = \
+	smp/xtos/memctl_default.S \
+	smp/xtos/reset-vector.S \
+	up/xtos/crt1-boards.S
+else
+rom_SOURCES = \
+	up/xtos/reset-vector.S \
+	up/xtos/crt1-boards.S
+endif
+
+rom_CFLAGS = \
+	$(ARCH_INCDIR) \
+	$(AM_CFLAGS) \
+	$(ARCH_CFLAGS) \
+	$(PLATFORM_INCDIR) \
+	$(SOF_INCDIR) \
+	-DCONFIG_VM_ROM
+
+rom_CCASFLAGS = \
+	$(ARCH_INCDIR) \
+	$(ASFLAGS) \
+	$(AM_CCASFLAGS) \
+	$(PLATFORM_INCDIR) \
+	-DCONFIG_VM_ROM
+
+rom_LDFLAGS = \
+	$(AM_LDFLAGS) \
+	$(ARCH_LDFLAGS) \
+	-T ../../platform/$(PLATFORM)/$(PLATFORM_ROM_LDSCRIPT)
+
+rom-local:
+	cp rom rom-$(FW_NAME)
+	$(OBJCOPY) -O binary rom rom-$(FW_NAME).bin
+	$(OBJDUMP) -h -D rom > rom-$(FW_NAME).map
+	$(OBJDUMP) -S rom > rom-$(FW_NAME).lst
+	$(OBJDUMP) -D rom > rom-$(FW_NAME).dis
+
+BIN_FLAGS += rom-local
+
+endif
+
 if BUILD_MODULE
 MODULE_COPY=$(OBJCOPY) -O binary ../../platform/$(PLATFORM)/module mod-$(FW_NAME).bin
 MODULE_INSERT=$(OBJCOPY) --add-section .module=mod-$(FW_NAME).bin \

src/arch/xtensa/smp/xtos/reset-vector.S

@@ -564,7 +564,7 @@ unpackdone:
 	 */
 #if HAVE_XSR && (XCHAL_HAVE_XEA1 || XCHAL_HAVE_XEA2)
 
-#if !CONFIG_BOOT_LOADER
+#if !defined(CONFIG_BOOT_LOADER)  || defined(CONFIG_VM_ROM)
 # ifndef XCHAL_DEBUGLEVEL		/* debug option not selected? */
 #  define XCHAL_DEBUGLEVEL	99	/* bogus value outside 2..6 */
 # endif
@@ -615,7 +615,7 @@ unpackdone:
 	 *  Note:  This needs to be call0 regardless of the selected ABI.
 	 */
 
-#if CONFIG_BOOT_LOADER
+#if defined(CONFIG_BOOT_LOADER) && !defined(CONFIG_VM_ROM)
 	movi	a0, SOF_TEXT_START
 	callx0	a0
 #else

src/arch/xtensa/up/xtos/crt1-boards.S

@@ -29,6 +29,7 @@
 // SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 #include <xtensa/coreasm.h>
+#include <platform/memory.h>
 #include <config.h>
 // DF #include "xtos-internal.h"
 //#include <xtensa/../../src/xtos/xtos-internal.h>
@@ -93,6 +94,20 @@ _ResetVector:
 	.text
 	.align 4
 	.literal_position
+
+// VM ROM jumps to boot loader in IMR/SRAM
+#if defined(CONFIG_VM_ROM)
+
+#if defined(CONFIG_SUECREEK)
+_boot_ldr_entry:
+	.word BOOT_LDR_TEXT_ENTRY_BASE
+#else
+_boot_ldr_entry:
+	.word IMR_BOOT_LDR_TEXT_ENTRY_BASE
+#endif
+	.align 4
+#endif /* VM_ROM */
+
 _start:
 	//  _start is typically NOT at the beginning of the text segment --
 	//  it is always called from either the reset vector or other code
@@ -195,7 +210,7 @@ _start:
 1:
 
 /* boot loader takes care of zeroing BSS */
-#if !defined(CONFIG_BOOT_LOADER)
+#if !defined(CONFIG_BOOT_LOADER) && !defined(CONFIG_VM_ROM)
 	/*
 	 *  Clear the BSS (uninitialized data) segments.
 	 *  This code supports multiple zeroed sections (*.bss).
@@ -272,6 +287,20 @@ _start:
 	 */
 
 	//  Pass an empty argv array, with an empty string as the program name.
+
+	// VM ROM jumps to bootloader here.
+#if defined(CONFIG_VM_ROM)
+	l32r	a0, _boot_ldr_entry	// load SRAM reset handler address
+#if defined(CONFIG_SUECREEK)
+	callx8	a0		// jump to the handler
+#else
+	callx12	a0
+#endif
+dead:	nop
+	j dead
+
+#endif /* VM ROM */
+
 #if 0
 	movi	ARG1, _start_argc	// argc address
 	movi	ARG2, _start_argv	// argv = ["", 0]
@@ -281,6 +310,8 @@ _start:
 	l32i	ARG1, ARG1, 0		// argc = 1
 	CALL	__clibrary_init
 #endif
+
+#if !defined(CONFIG_VM_ROM)
 	//  Call:   int main(int argc, char ** argv, char ** environ);
 	movi	ARG1, _start_argc	// argc address
 	movi	ARG2, _start_argv	// argv = ["", 0]
@@ -291,6 +322,7 @@ _start:
 	//  as the first outgoing argument.
 //	CALL	exit			// exit with main's return value
 	// Does not return here.
+#endif
 
 	.data
 	//  Mark argc/argv/envp parameters as weak so that an external

src/arch/xtensa/up/xtos/reset-vector.S

@@ -525,7 +525,7 @@ unpackdone:
 	 */
 #if HAVE_XSR
 
-#if !defined(CONFIG_BOOT_LOADER)
+#if !defined(CONFIG_BOOT_LOADER) || defined(CONFIG_VM_ROM)
 /*  For asm macros; works for positive a,b smaller than 1000:  */
 # define GREATERTHAN(a,b)	(((b)-(a)) & ~0xFFF)
 
@@ -579,7 +579,7 @@ unpackdone:
 	 *  Note:  This needs to be call0 regardless of the selected ABI.
 	 */
 
-#if CONFIG_BOOT_LOADER
+#if defined(CONFIG_BOOT_LOADER) && !defined(CONFIG_VM_ROM)
 		/*ToDo refine the _start*/
 		movi a0, SOF_TEXT_START
 		callx0 a0