diff options
| author | Hans de Goede <hdegoede@redhat.com> | 2014-11-15 22:55:53 +0100 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2015-01-14 14:56:36 +0100 |
| commit | 10191ed098a0a1417d80148372784956220e8dca (patch) | |
| tree | f55eb74f90063c9df7290e28789edb0b55659751 /arch | |
| parent | 37781a1a7e04a21feaa75ffac0723ec8f99dce19 (diff) | |
sun6i: Add sunxi_get_ss_bonding_id() function
Add a sunxi_get_ss_bonding_id() function, and use it to differentiate between
the A31s and the A31.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/cpu/armv7/sunxi/cpu_info.c | 38 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-sunxi/clock_sun6i.h | 4 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-sunxi/cpu.h | 5 |
3 files changed, 45 insertions, 2 deletions
diff --git a/arch/arm/cpu/armv7/sunxi/cpu_info.c b/arch/arm/cpu/armv7/sunxi/cpu_info.c index 41b9add297..5146dc422f 100644 --- a/arch/arm/cpu/armv7/sunxi/cpu_info.c +++ b/arch/arm/cpu/armv7/sunxi/cpu_info.c @@ -9,6 +9,32 @@ #include <common.h> #include <asm/io.h> #include <asm/arch/cpu.h> +#include <asm/arch/clock.h> + +#ifdef CONFIG_MACH_SUN6I +int sunxi_get_ss_bonding_id(void) +{ + struct sunxi_ccm_reg * const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + static int bonding_id = -1; + + if (bonding_id != -1) + return bonding_id; + + /* Enable Security System */ + setbits_le32(&ccm->ahb_reset0_cfg, 1 << AHB_RESET_OFFSET_SS); + setbits_le32(&ccm->ahb_gate0, 1 << AHB_GATE_OFFSET_SS); + + bonding_id = readl(SUNXI_SS_BASE); + bonding_id = (bonding_id >> 16) & 0x7; + + /* Disable Security System again */ + clrbits_le32(&ccm->ahb_gate0, 1 << AHB_GATE_OFFSET_SS); + clrbits_le32(&ccm->ahb_reset0_cfg, 1 << AHB_RESET_OFFSET_SS); + + return bonding_id; +} +#endif #ifdef CONFIG_DISPLAY_CPUINFO int print_cpuinfo(void) @@ -24,7 +50,17 @@ int print_cpuinfo(void) default: puts("CPU: Allwinner A1X (SUN5I)\n"); } #elif defined CONFIG_MACH_SUN6I - puts("CPU: Allwinner A31 (SUN6I)\n"); + switch (sunxi_get_ss_bonding_id()) { + case SUNXI_SS_BOND_ID_A31: + puts("CPU: Allwinner A31 (SUN6I)\n"); + break; + case SUNXI_SS_BOND_ID_A31S: + puts("CPU: Allwinner A31s (SUN6I)\n"); + break; + default: + printf("CPU: Allwinner A31? (SUN6I, id: %d)\n", + sunxi_get_ss_bonding_id()); + } #elif defined CONFIG_MACH_SUN7I puts("CPU: Allwinner A20 (SUN7I)\n"); #elif defined CONFIG_MACH_SUN8I diff --git a/arch/arm/include/asm/arch-sunxi/clock_sun6i.h b/arch/arm/include/asm/arch-sunxi/clock_sun6i.h index 359905452c..4bdc0de795 100644 --- a/arch/arm/include/asm/arch-sunxi/clock_sun6i.h +++ b/arch/arm/include/asm/arch-sunxi/clock_sun6i.h @@ -210,6 +210,7 @@ struct sunxi_ccm_reg { #define AHB_GATE_OFFSET_MMC1 9 #define AHB_GATE_OFFSET_MMC0 8 #define AHB_GATE_OFFSET_MMC(n) (AHB_GATE_OFFSET_MMC0 + (n)) +#define AHB_GATE_OFFSET_SS 5 /* ahb_gate1 offsets */ #define AHB_GATE_OFFSET_DRC0 25 @@ -278,8 +279,9 @@ struct sunxi_ccm_reg { #define AHB_RESET_OFFSET_MMC1 9 #define AHB_RESET_OFFSET_MMC0 8 #define AHB_RESET_OFFSET_MMC(n) (AHB_RESET_OFFSET_MMC0 + (n)) +#define AHB_RESET_OFFSET_SS 5 -/* ahb_reset0 offsets */ +/* ahb_reset1 offsets */ #define AHB_RESET_OFFSET_DRC0 25 #define AHB_RESET_OFFSET_DE_BE0 12 #define AHB_RESET_OFFSET_HDMI 11 diff --git a/arch/arm/include/asm/arch-sunxi/cpu.h b/arch/arm/include/asm/arch-sunxi/cpu.h index 2c92b5ca56..8aeed2fc72 100644 --- a/arch/arm/include/asm/arch-sunxi/cpu.h +++ b/arch/arm/include/asm/arch-sunxi/cpu.h @@ -139,9 +139,14 @@ #define SUNXI_CPU_CFG (SUNXI_TIMER_BASE + 0x13c) +/* SS bonding ids used for cpu identification */ +#define SUNXI_SS_BOND_ID_A31 4 +#define SUNXI_SS_BOND_ID_A31S 5 + #ifndef __ASSEMBLY__ void sunxi_board_init(void); void sunxi_reset(void); +int sunxi_get_ss_bonding_id(void); #endif /* __ASSEMBLY__ */ #endif /* _CPU_H */ |