[PATCH 2/5] ARM: i.MX8M: esdctl: export imx8m_barebox_earlymem_size

[Ahmad Fatoum <a.fatoum@pengutronix.de>]

Board code will need to find out early endmem to use newly defined
scratch space, so factor out a new helper function to get earlymem size.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
---
 arch/arm/mach-imx/esdctl.c              | 11 ++++++++---
 arch/arm/mach-imx/include/mach/esdctl.h |  3 +++
 2 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/arch/arm/mach-imx/esdctl.c b/arch/arm/mach-imx/esdctl.c
index a55ee06b8346..8de20ed42338 100644
--- a/arch/arm/mach-imx/esdctl.c
+++ b/arch/arm/mach-imx/esdctl.c
@@ -923,7 +923,7 @@ void __noreturn vf610_barebox_entry(void *boarddata)
 			  boarddata);
 }
 
-static void __noreturn imx8m_barebox_entry(void *boarddata, unsigned buswidth)
+resource_size_t imx8m_barebox_earlymem_size(unsigned buswidth)
 {
 	resource_size_t size;
 
@@ -937,8 +937,13 @@ static void __noreturn imx8m_barebox_entry(void *boarddata, unsigned buswidth)
 	 * pool placement. The rest of the system should be able to
 	 * detect and utilize full amount of memory.
 	 */
-	size = min_t(resource_size_t, SZ_4G - MX8M_DDR_CSD1_BASE_ADDR, size);
-	barebox_arm_entry(MX8M_DDR_CSD1_BASE_ADDR, size, boarddata);
+	return min_t(resource_size_t, SZ_4G - MX8M_DDR_CSD1_BASE_ADDR, size);
+}
+
+static void __noreturn imx8m_barebox_entry(void *boarddata, unsigned buswidth)
+{
+	barebox_arm_entry(MX8M_DDR_CSD1_BASE_ADDR,
+			  imx8m_barebox_earlymem_size(buswidth), boarddata);
 }
 
 void __noreturn imx8mm_barebox_entry(void *boarddata)
diff --git a/arch/arm/mach-imx/include/mach/esdctl.h b/arch/arm/mach-imx/include/mach/esdctl.h
index b0b531aed4a2..01533478cce8 100644
--- a/arch/arm/mach-imx/include/mach/esdctl.h
+++ b/arch/arm/mach-imx/include/mach/esdctl.h
@@ -131,6 +131,8 @@
 #define ESDCFGx_tRC_16			0x0000000f
 
 #ifndef __ASSEMBLY__
+#include <linux/types.h>
+
 void __noreturn imx1_barebox_entry(void *boarddata);
 void __noreturn imx25_barebox_entry(void *boarddata);
 void __noreturn imx27_barebox_entry(void *boarddata);
@@ -148,6 +150,7 @@ void __noreturn imx8mq_barebox_entry(void *boarddata);
 void __noreturn imx7d_barebox_entry(void *boarddata);
 #define imx6sx_barebox_entry(boarddata) imx6ul_barebox_entry(boarddata)
 void imx_esdctl_disable(void);
+resource_size_t imx8m_barebox_earlymem_size(unsigned buswidth);
 #endif
 
 #endif /* __MACH_ESDCTL_V2_H */
-- 
2.30.2