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sun6i: Add sunxi_get_ss_bonding_id() function

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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>
This commit is contained in:
Hans de Goede 2014-11-15 22:55:53 +01:00
parent 37781a1a7e
commit 10191ed098
3 changed files with 45 additions and 2 deletions
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38
arch/arm/cpu/armv7/sunxi/cpu_info.c
View File

@ -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

4
arch/arm/include/asm/arch-sunxi/clock_sun6i.h
View File

@ -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

5
arch/arm/include/asm/arch-sunxi/cpu.h
View File

@ -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 */