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mx6: add support of multi-processor command

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This allows u-boot to load different OS or Bare Metal application on
different cores of the i.MX6 SoC.
For example: running Android on cpu0 and a RT OS like QNX/FreeRTOS on cpu1.

Signed-off-by: Gabriel Huau <contact@huau-gabriel.fr>
Acked-by: Stefano Babic <sbabic@denx.de>
This commit is contained in:
Gabriel Huau
2014-07-26 11:35:43 -07:00
committed by Stefano Babic
parent 015e215bbf
commit a76df70908
7 changed files with 114 additions and 4 deletions
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13
arch/arm/include/asm/arch-mx6/imx-regs.h
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@@ -324,6 +324,19 @@
extern void imx_get_mac_from_fuse(int dev_id, unsigned char *mac);
#define SRC_SCR_CORE_1_RESET_OFFSET 14
#define SRC_SCR_CORE_1_RESET_MASK (1<<SRC_SCR_CORE_1_RESET_OFFSET)
#define SRC_SCR_CORE_2_RESET_OFFSET 15
#define SRC_SCR_CORE_2_RESET_MASK (1<<SRC_SCR_CORE_2_RESET_OFFSET)
#define SRC_SCR_CORE_3_RESET_OFFSET 16
#define SRC_SCR_CORE_3_RESET_MASK (1<<SRC_SCR_CORE_3_RESET_OFFSET)
#define SRC_SCR_CORE_1_ENABLE_OFFSET 22
#define SRC_SCR_CORE_1_ENABLE_MASK (1<<SRC_SCR_CORE_1_ENABLE_OFFSET)
#define SRC_SCR_CORE_2_ENABLE_OFFSET 23
#define SRC_SCR_CORE_2_ENABLE_MASK (1<<SRC_SCR_CORE_2_ENABLE_OFFSET)
#define SRC_SCR_CORE_3_ENABLE_OFFSET 24
#define SRC_SCR_CORE_3_ENABLE_MASK (1<<SRC_SCR_CORE_3_ENABLE_OFFSET)
/* System Reset Controller (SRC) */
struct src {
u32 scr;

1
arch/arm/include/asm/arch-mx6/sys_proto.h
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@@ -14,6 +14,7 @@
#define soc_rev() (get_cpu_rev() & 0xFF)
#define is_soc_rev(rev) (soc_rev() - rev)
u32 get_nr_cpus(void);
u32 get_cpu_rev(void);
/* returns MXC_CPU_ value */