tools: mkimage: Add support to generate FlexSPI Header for i.MX8m

Add struct with Flex SPI Configuration Block and enable generating
fspi header using mkimage.

Refer i.MX 8M Mini Application Processor Reference Manual for
detailed information about parameters for FlexSPI Configuration block.

Signed-off-by: Mamta Shukla <mamta.shukla@leica-geosystems.com>
Signed-off-by: Thomas Haemmerle <thomas.haemmerle@leica-geosystems.com>
Tested-by: Adam Ford <aford173@gmail.com>
Reviewed-by: Fabio Estevam <festevam@denx.de>
Reviewed-by: Andrey Zhizhikin <andrey.zhizhikin@leica-geosystems.com>

1 files changed, 80 insertions, 1 deletions

diff --git a/tools/imx8mimage.c b/tools/imx8mimage.c
index 52baf4c9903..a4699decf92 100644
--- a/tools/imx8mimage.c
+++ b/tools/imx8mimage.c
@@ -120,7 +120,6 @@ static void parse_cfg_cmd(int32_t cmd, char *token, char *name, int lineno)
 			rom_version = ROM_V1;
 		}
 		break;
-
 	}
 }
 
@@ -412,9 +411,75 @@ static void dump_header_v2(imx_header_v3_t *imx_header, int index)
 		imx_header[index].boot_data.plugin);
 }
 
+#ifdef CONFIG_FSPI_CONF_HEADER
+static int generate_fspi_header (int ifd)
+{
+	int ret, i = 0;
+	char *val;
+	char lut_str[] = CONFIG_LUT_SEQUENCE;
+
+	fspi_conf fspi_conf_data = {
+	.tag = {0x46, 0x43, 0x46, 0x42},
+	.version = {0x00, 0x00, 0x01, 0x56},
+	.reserved_1 = {0x00, 0x00, 0x00, 0x00},
+	.read_sample = CONFIG_READ_CLK_SOURCE,
+	.datahold =  0x03,
+	.datasetup = 0x03,
+	.coladdrwidth = 0x00,
+	.devcfgenable = 0x00,
+	.reserved_2 = {0x00, 0x00, 0x00},
+	.devmodeseq =  {0x00, 0x00, 0x00, 0x00},
+	.devmodearg =  {0x00, 0x00, 0x00, 0x00},
+	.cmd_enable =  0x00,
+	.reserved_3 = {0x00},
+	.cmd_seq = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+							0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
+	.cmd_arg = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+							0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
+	.controllermisc = {0x00, 0x00, 0x00, 0x00},
+	.dev_type = CONFIG_DEVICE_TYPE,
+	.sflash_pad = CONFIG_FLASH_PAD_TYPE,
+	.serial_clk = CONFIG_SERIAL_CLK_FREQUENCY,
+	.lut_custom = CONFIG_LUT_CUSTOM_SEQUENCE,
+	.reserved_4 = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
+	.sflashA1  =  {0x00, 0x00, 0x00, 0x10},
+	.sflashA2 = {0x00, 0x00, 0x00, 0x00},
+	.sflashB1 = {0x00, 0x00, 0x00, 0x00},
+	.sflashB2 =  {0x00, 0x00, 0x00, 0x00},
+	.cspadover = {0x00, 0x00, 0x00, 0x00},
+	.sclkpadover = {0x00, 0x00, 0x00, 0x00},
+	.datapadover = {0x00, 0x00, 0x00, 0x00},
+	.dqspadover = {0x00, 0x00, 0x00, 0x00},
+	.timeout =  {0x00, 0x00, 0x00, 0x00},
+	.commandInt = {0x00, 0x00, 0x00, 0x00},
+	.datavalid  = {0x00, 0x00, 0x00, 0x00},
+	.busyoffset = {0x00, 0x00},
+	.busybitpolarity = {0x00, 0x00},
+	};
+
+	for (val = strtok(lut_str, ","); val; val = strtok(NULL, ",")) {
+		fspi_conf_data.lut[i++] = strtoul(val, NULL, 16);
+	}
+
+	ret = lseek(ifd, 0, SEEK_CUR);
+	if (write(ifd, &fspi_conf_data, sizeof(fspi_conf_data)) == -1)
+		exit(EXIT_FAILURE);
+
+	ret = lseek(ifd, sizeof(fspi_conf_data), SEEK_CUR);
+
+	return ret;
+}
+#endif
+
 void build_image(int ofd)
 {
 	int file_off, header_hdmi_off = 0, header_image_off;
+
+#ifdef CONFIG_FSPI_CONF_HEADER
+	int fspi_off, fspi_fd;
+	char *fspi;
+#endif
+
 	int hdmi_fd, ap_fd, sld_fd;
 	uint32_t sld_load_addr = 0;
 	uint32_t csf_off, sld_csf_off = 0;
@@ -455,6 +520,20 @@ void build_image(int ofd)
 
 	header_image_off = file_off + ivt_offset;
 
+#ifdef CONFIG_FSPI_CONF_HEADER
+	fspi = CONFIG_FSPI_CONF_FILE;
+	fspi_fd = open(fspi, O_RDWR | O_CREAT, S_IRWXU);
+	if (fspi_fd < 0) {
+		fprintf(stderr, "Can't open %s: %s\n",
+			fspi, strerror(errno));
+		exit(EXIT_FAILURE);
+	}
+
+	fspi_off = generate_fspi_header(fspi_fd);
+	file_off = header_image_off + fspi_off;
+	close(fspi_fd);
+
+#endif
 	ap_fd = open(ap_img, O_RDONLY | O_BINARY);
 	if (ap_fd < 0) {
 		fprintf(stderr, "%s: Can't open: %s\n",