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stm32mp: add function get_cpu_dev

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Add a function get_cpu_dev to get the DEV_ID present
in DBGMCU_IDC register.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
This commit is contained in:
Patrick Delaunay 2020-03-18 09:24:48 +01:00
parent 5cf39720af
commit 7802a4495f
2 changed files with 11 additions and 5 deletions
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11
arch/arm/mach-stm32mp/cpu.c
View File

@ -236,6 +236,11 @@ static u32 read_idc(void)
return readl(DBGMCU_IDC);
}
u32 get_cpu_dev(void)
{
return (read_idc() & DBGMCU_IDC_DEV_ID_MASK) >> DBGMCU_IDC_DEV_ID_SHIFT;
}
u32 get_cpu_rev(void)
{
return (read_idc() & DBGMCU_IDC_REV_ID_MASK) >> DBGMCU_IDC_REV_ID_SHIFT;
@ -266,11 +271,7 @@ static u32 get_cpu_rpn(void)
u32 get_cpu_type(void)
{
u32 id;
id = (read_idc() & DBGMCU_IDC_DEV_ID_MASK) >> DBGMCU_IDC_DEV_ID_SHIFT;
return (id << 16) | get_cpu_rpn();
return (get_cpu_dev() << 16) | get_cpu_rpn();
}
/* Get Package options from OTP */

5
arch/arm/mach-stm32mp/include/mach/sys_proto.h
View File

@ -20,6 +20,11 @@
/* return CPU_STMP32MP...Xxx constants */
u32 get_cpu_type(void);
#define CPU_DEV_STM32MP15 0x500
/* return CPU_DEV constants */
u32 get_cpu_dev(void);
#define CPU_REVA 0x1000
#define CPU_REVB 0x2000
#define CPU_REVZ 0x2001