mt_scp: Generate IPI tables with util gen_ipi_table.

IPI table is board-specific.  This CL removes the original
IPI table in chip layer, and uses gen_ipi_table to generate
the table for each board to reduce the maintenance effort.

TEST=make BOARD=kukui_scp, and see build/kukui_scp/ipi_table_gen.inc
     exists. Push to Kukui, and see SCP boots.
TEST=modify IPI_COUNT in board.h and see it generates a new
     ipi_table_gen.inc
BUG=b:130508869
BRANCH=None

Change-Id: I0c05319447d15917e8833aa80d61166c4e396370
Signed-off-by: Yilun Lin <yllin@google.com>
Reviewed-on: https://chromium-review.googlesource.com/1568890
Commit-Ready: Yilun Lin <yllin@chromium.org>
Tested-by: Yilun Lin <yllin@chromium.org>
Reviewed-by: Nicolas Boichat <drinkcat@chromium.org>

2 files changed, 66 insertions, 0 deletions

diff --git a/util/build.mk b/util/build.mk
index 7699ef4572..4fb6b7e1f0 100644
--- a/util/build.mk
+++ b/util/build.mk
@@ -66,6 +66,14 @@ build-util-bin += gen_emmc_transfer_data
 $(out)/util/gen_emmc_transfer_data: BUILD_LDFLAGS += -DSECTION_IS_RO
 endif # CONFIG_BOOTBLOCK
 
+ifneq ($(CONFIG_IPI),)
+build-util-bin += gen_ipi_table
+
+$(out)/util/gen_ipi_table: board/$(BOARD)/board.h
+$(out)/ipi_table_gen.inc: $(out)/util/gen_ipi_table
+	$(call quiet,ipi_table,IPITBL )
+endif
+
 ifneq ($(CONFIG_TOUCHPAD_HASH_FW),)
 build-util-bin += gen_touchpad_hash
 
diff --git a/util/gen_ipi_table.c b/util/gen_ipi_table.c
new file mode 100644
index 0000000000..07a3a39be0
--- /dev/null
+++ b/util/gen_ipi_table.c
@@ -0,0 +1,58 @@
+/* Copyright 2019 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ *
+ * Generate IPI tables, and inputs come from IPI_COUNT macro in board.h.
+ */
+
+#include <stdio.h>
+
+/* Prevent from including gpio configs . */
+#define __ASSEMBLER__
+
+#include "board.h"
+
+#define FPRINTF(format, args...) fprintf(fout, format, ## args)
+
+int main(int argc, char **argv)
+{
+	FILE *fout;
+	int i;
+
+	if (argc != 2) {
+		fprintf(stderr, "USAGE: %s <output>\n", argv[0]);
+		return 1;
+	}
+
+	fout = fopen(argv[1], "w");
+
+	if (!fout) {
+		fprintf(stderr, "Cannot open output file %s\n", argv[1]);
+		return 1;
+	}
+
+	FPRINTF("/* This is a generated file. Do not modify. */\n");
+	FPRINTF("\n");
+	FPRINTF("/*\n");
+	FPRINTF(" * Table to hold all the IPI handler function pointer.\n");
+	FPRINTF(" */\n");
+	FPRINTF("table(ipi_handler_t, ipi_handler_table,\n");
+
+	for (i = 0; i < IPI_COUNT; ++i)
+		FPRINTF("ipi_x_func(handler, ipi_arguments, %d)\n", i);
+
+	FPRINTF(");\n");
+
+	FPRINTF("/*\n");
+	FPRINTF(" * Table to hold all the wake-up bool address.\n");
+	FPRINTF(" */\n");
+	FPRINTF("table(int *, ipi_wakeup_table,\n");
+
+	for (i = 0; i < IPI_COUNT; ++i)
+		FPRINTF("ipi_x_var(wakeup, %d)\n", i);
+
+	FPRINTF(");\n");
+
+	fclose(fout);
+	return 0;
+}