[v2] arm: omap: Unify get_device_type() function

Message ID 20170602150000.679-1-semen.protsenko@linaro.org
State New
Headers show

Commit Message

Sam Protsenko June 2, 2017, 3 p.m.
Refactor OMAP3/4/5 code so that we have only one get_device_type()
function for all platforms.

Details:
 - Add ctrl variable for AM33xx and OMAP3 platforms (like it's done for
   OMAP4/5), so we can obtain status register in common way
 - For now ctrl structure for AM33xx/OMAP3 contains only status register
   address
 - Run hw_data_init() in order to assign ctrl to proper structure
 - Remove DEVICE_MASK and DEVICE_GP definitions as they are not used
   (DEVICE_TYPE_MASK and GP_DEVICE are used instead)
 - Guard structs in omap_common.h with #ifndefs, because otherwise
   including omap_common.h in am33xx board files breaks compilation

Buildman script was run for all OMAP boards. Result output:
    arm: (for 38/616 boards)
        all +352.5
        bss -1.4
        data +3.5
        rodata +300.0
        spl/u-boot-spl:all +284.7
        spl/u-boot-spl:data +2.2
        spl/u-boot-spl:rodata +252.0
        spl/u-boot-spl:text +30.5
        text +50.4
    (no errors to report)

Tested on AM57x EVM and BeagleBoard xM.

Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
---
Changes in v2:
 - fixed crash on OMAP3 (move hw_data_init() from arch_cpu_init_dm()
   to s_init())
 - guard structures in omap_common.h with #ifndefs rather than
   extracting common definitions to omap_am_common.h

 arch/arm/include/asm/arch-am33xx/cpu.h  |  6 ------
 arch/arm/include/asm/arch-am33xx/omap.h |  3 +++
 arch/arm/include/asm/arch-omap3/omap.h  |  3 +++
 arch/arm/include/asm/arch-omap4/omap.h  |  1 -
 arch/arm/include/asm/arch-omap5/omap.h  |  1 -
 arch/arm/include/asm/omap_common.h      | 11 ++++++++++-
 arch/arm/mach-omap2/Makefile            |  1 +
 arch/arm/mach-omap2/am33xx/Makefile     |  2 ++
 arch/arm/mach-omap2/am33xx/board.c      |  3 +++
 arch/arm/mach-omap2/am33xx/hw_data.c    | 19 +++++++++++++++++++
 arch/arm/mach-omap2/am33xx/prcm-regs.c  | 15 +++++++++++++++
 arch/arm/mach-omap2/am33xx/sys_info.c   | 10 ----------
 arch/arm/mach-omap2/hwinit-common.c     |  9 ---------
 arch/arm/mach-omap2/omap3/Makefile      |  2 ++
 arch/arm/mach-omap2/omap3/board.c       |  7 +++++++
 arch/arm/mach-omap2/omap3/hw_data.c     | 19 +++++++++++++++++++
 arch/arm/mach-omap2/omap3/prcm-regs.c   | 15 +++++++++++++++
 arch/arm/mach-omap2/omap3/sys_info.c    |  9 +--------
 arch/arm/mach-omap2/sysinfo-common.c    | 21 +++++++++++++++++++++
 board/ti/am335x/board.c                 |  1 +
 20 files changed, 122 insertions(+), 36 deletions(-)
 create mode 100644 arch/arm/mach-omap2/am33xx/hw_data.c
 create mode 100644 arch/arm/mach-omap2/am33xx/prcm-regs.c
 create mode 100644 arch/arm/mach-omap2/omap3/hw_data.c
 create mode 100644 arch/arm/mach-omap2/omap3/prcm-regs.c
 create mode 100644 arch/arm/mach-omap2/sysinfo-common.c

Comments

Tom Rini June 5, 2017, 1:46 p.m. | #1
On Mon, Jun 05, 2017 at 04:00:35PM +0530, Lokesh Vutla wrote:
> 

> 

> On Friday 02 June 2017 08:30 PM, Sam Protsenko wrote:

> > Refactor OMAP3/4/5 code so that we have only one get_device_type()

> > function for all platforms.

> > 

> > Details:

> >  - Add ctrl variable for AM33xx and OMAP3 platforms (like it's done for

> >    OMAP4/5), so we can obtain status register in common way

> >  - For now ctrl structure for AM33xx/OMAP3 contains only status register

> >    address

> >  - Run hw_data_init() in order to assign ctrl to proper structure

> >  - Remove DEVICE_MASK and DEVICE_GP definitions as they are not used

> >    (DEVICE_TYPE_MASK and GP_DEVICE are used instead)

> >  - Guard structs in omap_common.h with #ifndefs, because otherwise

> >    including omap_common.h in am33xx board files breaks compilation

> > 

> > Buildman script was run for all OMAP boards. Result output:

> >     arm: (for 38/616 boards)

> >         all +352.5

> >         bss -1.4

> >         data +3.5

> >         rodata +300.0

> >         spl/u-boot-spl:all +284.7

> >         spl/u-boot-spl:data +2.2

> >         spl/u-boot-spl:rodata +252.0

> >         spl/u-boot-spl:text +30.5

> >         text +50.4

> >     (no errors to report)

> > 

> > Tested on AM57x EVM and BeagleBoard xM.

> > 

> > Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>

> 

> Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>

> 

> Will you be able to test on BeagleBoneBlack as well?


I tested v1 of this on am335x-gp-evm.  I don't have BBB in my automatic
lab due to how it's powered, and that I only have 1 of those USB hubs I
can control power on each port on. :(

-- 
Tom
Lokesh Vutla June 6, 2017, 2:21 a.m. | #2
On Monday 05 June 2017 07:16 PM, Tom Rini wrote:
> On Mon, Jun 05, 2017 at 04:00:35PM +0530, Lokesh Vutla wrote:
>>
>>
>> On Friday 02 June 2017 08:30 PM, Sam Protsenko wrote:
>>> Refactor OMAP3/4/5 code so that we have only one get_device_type()
>>> function for all platforms.
>>>
>>> Details:
>>>  - Add ctrl variable for AM33xx and OMAP3 platforms (like it's done for
>>>    OMAP4/5), so we can obtain status register in common way
>>>  - For now ctrl structure for AM33xx/OMAP3 contains only status register
>>>    address
>>>  - Run hw_data_init() in order to assign ctrl to proper structure
>>>  - Remove DEVICE_MASK and DEVICE_GP definitions as they are not used
>>>    (DEVICE_TYPE_MASK and GP_DEVICE are used instead)
>>>  - Guard structs in omap_common.h with #ifndefs, because otherwise
>>>    including omap_common.h in am33xx board files breaks compilation
>>>
>>> Buildman script was run for all OMAP boards. Result output:
>>>     arm: (for 38/616 boards)
>>>         all +352.5
>>>         bss -1.4
>>>         data +3.5
>>>         rodata +300.0
>>>         spl/u-boot-spl:all +284.7
>>>         spl/u-boot-spl:data +2.2
>>>         spl/u-boot-spl:rodata +252.0
>>>         spl/u-boot-spl:text +30.5
>>>         text +50.4
>>>     (no errors to report)
>>>
>>> Tested on AM57x EVM and BeagleBoard xM.
>>>
>>> Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
>>
>> Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
>>
>> Will you be able to test on BeagleBoneBlack as well?
> 
> I tested v1 of this on am335x-gp-evm.  I don't have BBB in my automatic

This is fine. I just want to make sure am335x is not broken :)

Thanks and regards,
Lokesh

> lab due to how it's powered, and that I only have 1 of those USB hubs I
> can control power on each port on. :(
>
Tom Rini June 10, 2017, 1:46 p.m. | #3
On Fri, Jun 02, 2017 at 06:00:00PM +0300, Semen Protsenko wrote:

> Refactor OMAP3/4/5 code so that we have only one get_device_type()

> function for all platforms.

> 

> Details:

>  - Add ctrl variable for AM33xx and OMAP3 platforms (like it's done for

>    OMAP4/5), so we can obtain status register in common way

>  - For now ctrl structure for AM33xx/OMAP3 contains only status register

>    address

>  - Run hw_data_init() in order to assign ctrl to proper structure

>  - Remove DEVICE_MASK and DEVICE_GP definitions as they are not used

>    (DEVICE_TYPE_MASK and GP_DEVICE are used instead)

>  - Guard structs in omap_common.h with #ifndefs, because otherwise

>    including omap_common.h in am33xx board files breaks compilation

> 

> Buildman script was run for all OMAP boards. Result output:

>     arm: (for 38/616 boards)

>         all +352.5

>         bss -1.4

>         data +3.5

>         rodata +300.0

>         spl/u-boot-spl:all +284.7

>         spl/u-boot-spl:data +2.2

>         spl/u-boot-spl:rodata +252.0

>         spl/u-boot-spl:text +30.5

>         text +50.4

>     (no errors to report)

> 

> Tested on AM57x EVM and BeagleBoard xM.

> 

> Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>

> Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>


Applied to u-boot/master, thanks!

-- 
Tom

Patch

diff --git a/arch/arm/include/asm/arch-am33xx/cpu.h b/arch/arm/include/asm/arch-am33xx/cpu.h
index 8cae291ea0..e8d7d549e8 100644
--- a/arch/arm/include/asm/arch-am33xx/cpu.h
+++ b/arch/arm/include/asm/arch-am33xx/cpu.h
@@ -36,12 +36,6 @@ 
 #define TCFG_RESET			BIT(0)	/* software reset */
 #define TCFG_EMUFREE			BIT(1)	/* behaviour of tmr on debug */
 #define TCFG_IDLEMOD_SHIFT		(2)	/* power management */
-/* device type */
-#define DEVICE_MASK			(BIT(8) | BIT(9) | BIT(10))
-#define TST_DEVICE			0x0
-#define EMU_DEVICE			0x1
-#define HS_DEVICE			0x2
-#define GP_DEVICE			0x3
 
 /* cpu-id for AM43XX AM33XX and TI81XX family */
 #define AM437X				0xB98C
diff --git a/arch/arm/include/asm/arch-am33xx/omap.h b/arch/arm/include/asm/arch-am33xx/omap.h
index 3293caaca4..5a1b95c2c0 100644
--- a/arch/arm/include/asm/arch-am33xx/omap.h
+++ b/arch/arm/include/asm/arch-am33xx/omap.h
@@ -41,6 +41,9 @@  struct omap_boot_parameters {
 	unsigned char boot_device;
 	unsigned char reset_reason;
 };
+
+#define DEVICE_TYPE_SHIFT		0x8
+#define DEVICE_TYPE_MASK		(0x7 << DEVICE_TYPE_SHIFT)
 #endif
 
 #endif
diff --git a/arch/arm/include/asm/arch-omap3/omap.h b/arch/arm/include/asm/arch-omap3/omap.h
index db763e49a3..8933f5489f 100644
--- a/arch/arm/include/asm/arch-omap3/omap.h
+++ b/arch/arm/include/asm/arch-omap3/omap.h
@@ -91,6 +91,9 @@  struct s32ktimer {
 	unsigned int s32k_cr;		/* 0x10 */
 };
 
+#define DEVICE_TYPE_SHIFT		0x8
+#define DEVICE_TYPE_MASK		(0x7 << DEVICE_TYPE_SHIFT)
+
 #endif /* __ASSEMBLY__ */
 
 #ifndef __ASSEMBLY__
diff --git a/arch/arm/include/asm/arch-omap4/omap.h b/arch/arm/include/asm/arch-omap4/omap.h
index b86a776840..1a3ff7dc2f 100644
--- a/arch/arm/include/asm/arch-omap4/omap.h
+++ b/arch/arm/include/asm/arch-omap4/omap.h
@@ -100,7 +100,6 @@  struct s32ktimer {
 
 #define DEVICE_TYPE_SHIFT (0x8)
 #define DEVICE_TYPE_MASK (0x7 << DEVICE_TYPE_SHIFT)
-#define DEVICE_GP 0x3
 
 #endif /* __ASSEMBLY__ */
 
diff --git a/arch/arm/include/asm/arch-omap5/omap.h b/arch/arm/include/asm/arch-omap5/omap.h
index 8f31da1a7b..2f005dd3ad 100644
--- a/arch/arm/include/asm/arch-omap5/omap.h
+++ b/arch/arm/include/asm/arch-omap5/omap.h
@@ -127,7 +127,6 @@  struct s32ktimer {
 
 #define DEVICE_TYPE_SHIFT 0x6
 #define DEVICE_TYPE_MASK (0x7 << DEVICE_TYPE_SHIFT)
-#define DEVICE_GP 0x3
 
 /* Output impedance control */
 #define ds_120_ohm	0x0
diff --git a/arch/arm/include/asm/omap_common.h b/arch/arm/include/asm/omap_common.h
index c1a70b15d0..ac9ba428d8 100644
--- a/arch/arm/include/asm/omap_common.h
+++ b/arch/arm/include/asm/omap_common.h
@@ -484,6 +484,7 @@  struct omap_sys_ctrl_regs {
 	u32 ctrl_core_sma_sw_1;
 };
 
+#ifndef CONFIG_AM33XX
 struct dpll_params {
 	u32 m;
 	u32 n;
@@ -516,6 +517,7 @@  struct dpll_regs {
 	u32 cm_div_h23_dpll;
 	u32 cm_div_h24_dpll;
 };
+#endif /* CONFIG_AM33XX */
 
 struct dplls {
 	const struct dpll_params *mpu;
@@ -539,6 +541,7 @@  struct pmic_data {
 	int (*pmic_write)(u8 sa, u8 reg_addr, u8 reg_data);
 };
 
+#ifndef CONFIG_AM33XX
 enum {
 	OPP_LOW,
 	OPP_NOM,
@@ -584,6 +587,7 @@  struct vcores_data {
 	struct volts eve;
 	struct volts iva;
 };
+#endif /* CONFIG_AM33XX */
 
 extern struct prcm_regs const **prcm;
 extern struct prcm_regs const omap5_es1_prcm;
@@ -595,6 +599,8 @@  extern struct dplls dra7xx_dplls;
 extern struct vcores_data const **omap_vcores;
 extern const u32 sys_clk_array[8];
 extern struct omap_sys_ctrl_regs const **ctrl;
+extern struct omap_sys_ctrl_regs const am33xx_ctrl;
+extern struct omap_sys_ctrl_regs const omap3_ctrl;
 extern struct omap_sys_ctrl_regs const omap4_ctrl;
 extern struct omap_sys_ctrl_regs const omap5_ctrl;
 extern struct omap_sys_ctrl_regs const dra7xx_ctrl;
@@ -611,6 +617,7 @@  const struct dpll_params *get_iva_dpll_params(struct dplls const *);
 const struct dpll_params *get_usb_dpll_params(struct dplls const *);
 const struct dpll_params *get_abe_dpll_params(struct dplls const *);
 
+#ifndef CONFIG_AM33XX
 void do_enable_clocks(u32 const *clk_domains,
 		      u32 const *clk_modules_hw_auto,
 		      u32 const *clk_modules_explicit_en,
@@ -619,6 +626,7 @@  void do_enable_clocks(u32 const *clk_domains,
 void do_disable_clocks(u32 const *clk_domains,
 		       u32 const *clk_modules_disable,
 		       u8 wait_for_disable);
+#endif /* CONFIG_AM33XX */
 
 void setup_post_dividers(u32 const base,
 			const struct dpll_params *params);
@@ -630,7 +638,9 @@  void enable_basic_uboot_clocks(void);
 void enable_usb_clocks(int index);
 void disable_usb_clocks(int index);
 
+#ifndef CONFIG_AM33XX
 void scale_vcores(struct vcores_data const *);
+#endif /* CONFIG_AM33XX */
 int get_voltrail_opp(int rail_offset);
 u32 get_offset_code(u32 volt_offset, struct pmic_data *pmic);
 void do_scale_vcore(u32 vcore_reg, u32 volt_mv, struct pmic_data *pmic);
@@ -748,7 +758,6 @@  static inline u8 is_dra72x(void)
  * silicon device type
  * Moving to common from cpu.h, since it is shared by various omap devices
  */
-#define DEVICE_MASK         (BIT(8) | BIT(9) | BIT(10))
 #define TST_DEVICE          0x0
 #define EMU_DEVICE          0x1
 #define HS_DEVICE           0x2
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index aa3986dddb..d43085ca98 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -20,6 +20,7 @@  endif
 endif
 obj-y	+= utils.o
 
+obj-y	+= sysinfo-common.o
 ifneq ($(CONFIG_OMAP44XX)$(CONFIG_OMAP54XX),)
 obj-y	+= hwinit-common.o
 obj-y	+= clocks-common.o
diff --git a/arch/arm/mach-omap2/am33xx/Makefile b/arch/arm/mach-omap2/am33xx/Makefile
index 05cc8a11c5..50dd9d84cc 100644
--- a/arch/arm/mach-omap2/am33xx/Makefile
+++ b/arch/arm/mach-omap2/am33xx/Makefile
@@ -18,6 +18,8 @@  obj-y	+= ddr.o
 obj-y	+= emif4.o
 obj-y	+= board.o
 obj-y	+= mux.o
+obj-y	+= prcm-regs.o
+obj-y	+= hw_data.o
 
 obj-$(CONFIG_CLOCK_SYNTHESIZER)	+= clk_synthesizer.o
 
diff --git a/arch/arm/mach-omap2/am33xx/board.c b/arch/arm/mach-omap2/am33xx/board.c
index a8b5d13238..b728365c52 100644
--- a/arch/arm/mach-omap2/am33xx/board.c
+++ b/arch/arm/mach-omap2/am33xx/board.c
@@ -26,6 +26,7 @@ 
 #include <asm/io.h>
 #include <asm/emif.h>
 #include <asm/gpio.h>
+#include <asm/omap_common.h>
 #include <i2c.h>
 #include <miiphy.h>
 #include <cpsw.h>
@@ -326,6 +327,7 @@  void early_system_init(void)
 #ifdef CONFIG_SPL_BUILD
 void board_init_f(ulong dummy)
 {
+	hw_data_init();
 	early_system_init();
 	board_early_init_f();
 	sdram_init();
@@ -340,6 +342,7 @@  void board_init_f(ulong dummy)
 
 int arch_cpu_init_dm(void)
 {
+	hw_data_init();
 #ifndef CONFIG_SKIP_LOWLEVEL_INIT
 	early_system_init();
 #endif
diff --git a/arch/arm/mach-omap2/am33xx/hw_data.c b/arch/arm/mach-omap2/am33xx/hw_data.c
new file mode 100644
index 0000000000..63e55cff77
--- /dev/null
+++ b/arch/arm/mach-omap2/am33xx/hw_data.c
@@ -0,0 +1,19 @@ 
+/*
+ * HW data initialization for AM33xx.
+ *
+ * (C) Copyright 2017 Linaro Ltd.
+ * Sam Protsenko <semen.protsenko@linaro.org>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <asm/arch/omap.h>
+#include <asm/omap_common.h>
+
+struct omap_sys_ctrl_regs const **ctrl =
+	(struct omap_sys_ctrl_regs const **)OMAP_SRAM_SCRATCH_SYS_CTRL;
+
+void hw_data_init(void)
+{
+	*ctrl = &am33xx_ctrl;
+}
diff --git a/arch/arm/mach-omap2/am33xx/prcm-regs.c b/arch/arm/mach-omap2/am33xx/prcm-regs.c
new file mode 100644
index 0000000000..c9a3af6584
--- /dev/null
+++ b/arch/arm/mach-omap2/am33xx/prcm-regs.c
@@ -0,0 +1,15 @@ 
+/*
+ * HW regs data for AM33xx.
+ *
+ * (C) Copyright 2017 Linaro Ltd.
+ * Sam Protsenko <semen.protsenko@linaro.org>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <asm/arch/hardware.h>
+#include <asm/omap_common.h>
+
+struct omap_sys_ctrl_regs const am33xx_ctrl = {
+	.control_status = CTRL_BASE + 0x40,
+};
diff --git a/arch/arm/mach-omap2/am33xx/sys_info.c b/arch/arm/mach-omap2/am33xx/sys_info.c
index 564bae6793..ea434aaf33 100644
--- a/arch/arm/mach-omap2/am33xx/sys_info.c
+++ b/arch/arm/mach-omap2/am33xx/sys_info.c
@@ -51,16 +51,6 @@  u32 get_cpu_type(void)
 }
 
 /**
- * get_device_type(): tell if GP/HS/EMU/TST
- */
-u32 get_device_type(void)
-{
-	int mode;
-	mode = readl(&cstat->statusreg) & (DEVICE_MASK);
-	return mode >>= 8;
-}
-
-/**
  * get_sysboot_value(void) - return SYS_BOOT[4:0]
  */
 u32 get_sysboot_value(void)
diff --git a/arch/arm/mach-omap2/hwinit-common.c b/arch/arm/mach-omap2/hwinit-common.c
index c090442598..7f6db3cf37 100644
--- a/arch/arm/mach-omap2/hwinit-common.c
+++ b/arch/arm/mach-omap2/hwinit-common.c
@@ -278,15 +278,6 @@  int checkboard(void)
 	return 0;
 }
 
-/*
- *  get_device_type(): tell if GP/HS/EMU/TST
- */
-u32 get_device_type(void)
-{
-	return (readl((*ctrl)->control_status) &
-				      (DEVICE_TYPE_MASK)) >> DEVICE_TYPE_SHIFT;
-}
-
 #if defined(CONFIG_DISPLAY_CPUINFO)
 /*
  * Print CPU information
diff --git a/arch/arm/mach-omap2/omap3/Makefile b/arch/arm/mach-omap2/omap3/Makefile
index 06cc9f2658..61a76b6f66 100644
--- a/arch/arm/mach-omap2/omap3/Makefile
+++ b/arch/arm/mach-omap2/omap3/Makefile
@@ -14,6 +14,8 @@  obj-y	+= board.o
 obj-y	+= boot.o
 obj-y	+= clock.o
 obj-y	+= sys_info.o
+obj-y	+= prcm-regs.o
+obj-y	+= hw_data.o
 ifdef CONFIG_SPL_BUILD
 obj-$(CONFIG_SPL_OMAP3_ID_NAND)	+= spl_id_nand.o
 endif
diff --git a/arch/arm/mach-omap2/omap3/board.c b/arch/arm/mach-omap2/omap3/board.c
index 01df579df2..cd8e302272 100644
--- a/arch/arm/mach-omap2/omap3/board.c
+++ b/arch/arm/mach-omap2/omap3/board.c
@@ -173,6 +173,11 @@  void try_unlock_memory(void)
 	return;
 }
 
+void early_system_init(void)
+{
+	hw_data_init();
+}
+
 /******************************************************************************
  * Routine: s_init
  * Description: Does early system init of muxing and clocks.
@@ -181,6 +186,7 @@  void try_unlock_memory(void)
 void s_init(void)
 {
 	watchdog_init();
+	early_system_init();
 
 	try_unlock_memory();
 
@@ -204,6 +210,7 @@  void s_init(void)
 #ifdef CONFIG_SPL_BUILD
 void board_init_f(ulong dummy)
 {
+	early_system_init();
 	mem_init();
 }
 #endif
diff --git a/arch/arm/mach-omap2/omap3/hw_data.c b/arch/arm/mach-omap2/omap3/hw_data.c
new file mode 100644
index 0000000000..53b220aec3
--- /dev/null
+++ b/arch/arm/mach-omap2/omap3/hw_data.c
@@ -0,0 +1,19 @@ 
+/*
+ * HW data initialization for OMAP3.
+ *
+ * (C) Copyright 2017 Linaro Ltd.
+ * Sam Protsenko <semen.protsenko@linaro.org>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <asm/arch/omap.h>
+#include <asm/omap_common.h>
+
+struct omap_sys_ctrl_regs const **ctrl =
+	(struct omap_sys_ctrl_regs const **)OMAP_SRAM_SCRATCH_SYS_CTRL;
+
+void hw_data_init(void)
+{
+	*ctrl = &omap3_ctrl;
+}
diff --git a/arch/arm/mach-omap2/omap3/prcm-regs.c b/arch/arm/mach-omap2/omap3/prcm-regs.c
new file mode 100644
index 0000000000..ca29ce9bda
--- /dev/null
+++ b/arch/arm/mach-omap2/omap3/prcm-regs.c
@@ -0,0 +1,15 @@ 
+/*
+ * HW regs data for OMAP3.
+ *
+ * (C) Copyright 2017 Linaro Ltd.
+ * Sam Protsenko <semen.protsenko@linaro.org>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <asm/arch/omap.h>
+#include <asm/omap_common.h>
+
+struct omap_sys_ctrl_regs const omap3_ctrl = {
+	.control_status = OMAP34XX_CTRL_BASE + 0x2F0,
+};
diff --git a/arch/arm/mach-omap2/omap3/sys_info.c b/arch/arm/mach-omap2/omap3/sys_info.c
index 7e6c2633f9..155f5b245d 100644
--- a/arch/arm/mach-omap2/omap3/sys_info.c
+++ b/arch/arm/mach-omap2/omap3/sys_info.c
@@ -17,6 +17,7 @@ 
 #include <asm/arch/mem.h>	/* get mem tables */
 #include <asm/arch/sys_proto.h>
 #include <asm/bootm.h>
+#include <asm/omap_common.h>
 
 #include <i2c.h>
 #include <linux/compiler.h>
@@ -236,14 +237,6 @@  u32 get_boot_type(void)
 	return (readl(&ctrl_base->status) & SYSBOOT_MASK);
 }
 
-/*************************************************************
- *  get_device_type(): tell if GP/HS/EMU/TST
- *************************************************************/
-u32 get_device_type(void)
-{
-	return ((readl(&ctrl_base->status) & (DEVICE_MASK)) >> 8);
-}
-
 #ifdef CONFIG_DISPLAY_CPUINFO
 /**
  * Print CPU information
diff --git a/arch/arm/mach-omap2/sysinfo-common.c b/arch/arm/mach-omap2/sysinfo-common.c
new file mode 100644
index 0000000000..1dc7051ab3
--- /dev/null
+++ b/arch/arm/mach-omap2/sysinfo-common.c
@@ -0,0 +1,21 @@ 
+/*
+ * System information routines for all OMAP based boards.
+ *
+ * (C) Copyright 2017 Linaro Ltd.
+ * Sam Protsenko <semen.protsenko@linaro.org>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <asm/arch/omap.h>
+#include <asm/io.h>
+#include <asm/omap_common.h>
+
+/**
+ * Tell if device is GP/HS/EMU/TST.
+ */
+u32 get_device_type(void)
+{
+	return (readl((*ctrl)->control_status) & DEVICE_TYPE_MASK) >>
+		DEVICE_TYPE_SHIFT;
+}
diff --git a/board/ti/am335x/board.c b/board/ti/am335x/board.c
index 517965c0f0..b5c4ed70b8 100644
--- a/board/ti/am335x/board.c
+++ b/board/ti/am335x/board.c
@@ -26,6 +26,7 @@ 
 #include <asm/io.h>
 #include <asm/emif.h>
 #include <asm/gpio.h>
+#include <asm/omap_common.h>
 #include <asm/omap_sec_common.h>
 #include <asm/omap_mmc.h>
 #include <i2c.h>