[PATCH 18/21] ARM: i.MX: bbu: add FlexSPI update handler

[Marco Felsch <m.felsch@pengutronix.de>]

This adds the update handler support to flash barebox flexspi compatible
images to the QSPI.

Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
---
 arch/arm/mach-imx/imx-bbu-internal.c | 40 ++++++++++++++++++++++++++++++++++++
 include/mach/imx/bbu.h               | 11 ++++++++++
 2 files changed, 51 insertions(+)

diff --git a/arch/arm/mach-imx/imx-bbu-internal.c b/arch/arm/mach-imx/imx-bbu-internal.c
index 066b7c0002..cd7db81cc9 100644
--- a/arch/arm/mach-imx/imx-bbu-internal.c
+++ b/arch/arm/mach-imx/imx-bbu-internal.c
@@ -19,6 +19,7 @@
 #include <environment.h>
 #include <mach/imx/bbu.h>
 #include <mach/imx/generic.h>
+#include <mach/imx/imx-header.h>
 #include <libfile.h>
 
 struct imx_internal_bbu_handler {
@@ -654,3 +655,42 @@ int imx_bbu_external_nor_register_handler(const char *name,
 
 	return __register_handler(imx_handler);
 }
+
+static unsigned long imx_bbu_flash_header_offset_flexspi(void)
+{
+	unsigned int sd_flash_header_gap = SZ_32K;
+
+	if (cpu_is_mx8mm())
+		return sd_flash_header_gap;
+
+	return sd_flash_header_gap + SZ_1K;
+}
+
+static unsigned long imx_bbu_device_offset_flexspi(void)
+{
+	if (cpu_is_mx8mm())
+		return 0;
+
+	return 0x400;
+}
+
+static int
+imx_bbu_internal_flexspi_nor_register_handler(const char *name,
+					      const char *devicefile,
+					      unsigned long flags)
+{
+	struct imx_internal_bbu_handler *imx_handler;
+
+	flags |= IMX_BBU_FLAG_ERASE | IMX_BBU_FLAG_PARTITION_STARTS_AT_HEADER;
+	imx_handler = __init_handler(name, devicefile, flags);
+	imx_handler->target_device_offset = imx_bbu_device_offset_flexspi();
+	imx_handler->flash_header_offset = imx_bbu_flash_header_offset_flexspi();
+	imx_handler->expected_type = filetype_nxp_fspi_image;
+
+	return __register_handler(imx_handler);
+}
+
+int imx8m_bbu_internal_flexspi_nor_register_handler(const char *name,
+						    const char *devicefile,
+						    unsigned long flags)
+	__alias(imx_bbu_internal_flexspi_nor_register_handler);
diff --git a/include/mach/imx/bbu.h b/include/mach/imx/bbu.h
index 34133b587c..451ae15740 100644
--- a/include/mach/imx/bbu.h
+++ b/include/mach/imx/bbu.h
@@ -86,6 +86,10 @@ int imx8m_bbu_internal_mmcboot_register_handler(const char *name, const char *de
 int imx_bbu_external_nor_register_handler(const char *name, const char *devicefile,
 		unsigned long flags);
 
+int imx8m_bbu_internal_flexspi_nor_register_handler(const char *name,
+						    const char *devicefile,
+						    unsigned long flags);
+
 #else
 
 static inline int imx51_bbu_internal_mmc_register_handler(const char *name, const char *devicefile,
@@ -198,6 +202,13 @@ imx7_bbu_internal_spi_i2c_register_handler(const char *name, char *devicefile,
 	return -ENOSYS;
 }
 
+static inline int
+imx8m_bbu_internal_flexspi_nor_register_handler(const char *name, const char *devicefile,
+						unsigned long flags);
+{
+	return -ENOSYS;
+}
+
 #endif
 
 #if defined(CONFIG_BAREBOX_UPDATE_IMX_EXTERNAL_NAND)

-- 
2.30.2