diff options
| author | Otavio Salvador <otavio@ossystems.com.br> | 2012-07-28 11:43:47 +0000 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2012-09-01 14:58:16 +0200 |
| commit | b0261b121238c00be9793f9527e823f37025dea7 (patch) | |
| tree | f249d26d040b4ebc673f2d0ca68301a7cef53b1c | |
| parent | 7c5e6f7a5ddc1643300ce0be2a2a8283f4a797f7 (diff) | |
| download | u-boot-imx-b0261b121238c00be9793f9527e823f37025dea7.zip u-boot-imx-b0261b121238c00be9793f9527e823f37025dea7.tar.gz u-boot-imx-b0261b121238c00be9793f9527e823f37025dea7.tar.bz2 | |
MX28: extend print_cpuinfo() to use chip information
The information now is gathered from HW_DIGCTL_CHIPID register and
includes the chip modem and revision on the output.
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
| -rw-r--r-- | arch/arm/cpu/arm926ejs/mx28/mx28.c | 38 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-mx28/regs-digctl.h | 4 |
2 files changed, 40 insertions, 2 deletions
diff --git a/arch/arm/cpu/arm926ejs/mx28/mx28.c b/arch/arm/cpu/arm926ejs/mx28/mx28.c index ff25772..cf7a50f 100644 --- a/arch/arm/cpu/arm926ejs/mx28/mx28.c +++ b/arch/arm/cpu/arm926ejs/mx28/mx28.c @@ -188,13 +188,47 @@ int arch_cpu_init(void) } #if defined(CONFIG_DISPLAY_CPUINFO) +static const char *get_cpu_type(void) +{ + struct mx28_digctl_regs *digctl_regs = + (struct mx28_digctl_regs *)MXS_DIGCTL_BASE; + + switch (readl(&digctl_regs->hw_digctl_chipid) & HW_DIGCTL_CHIPID_MASK) { + case HW_DIGCTL_CHIPID_MX28: + return "28"; + default: + return "??"; + } +} + +static const char *get_cpu_rev(void) +{ + struct mx28_digctl_regs *digctl_regs = + (struct mx28_digctl_regs *)MXS_DIGCTL_BASE; + uint8_t rev = readl(&digctl_regs->hw_digctl_chipid) & 0x000000FF; + + switch (readl(&digctl_regs->hw_digctl_chipid) & HW_DIGCTL_CHIPID_MASK) { + case HW_DIGCTL_CHIPID_MX28: + switch (rev) { + case 0x1: + return "1.2"; + default: + return "??"; + } + default: + return "??"; + } +} + int print_cpuinfo(void) { struct mx28_spl_data *data = (struct mx28_spl_data *) ((CONFIG_SYS_TEXT_BASE - sizeof(struct mx28_spl_data)) & ~0xf); - printf("Freescale i.MX28 family at %d MHz\n", - mxc_get_clock(MXC_ARM_CLK) / 1000000); + printf("CPU: Freescale i.MX%s rev%s at %d MHz\n", + get_cpu_type(), + get_cpu_rev(), + mxc_get_clock(MXC_ARM_CLK) / 1000000); printf("BOOT: %s\n", mx28_boot_modes[data->boot_mode_idx].mode); return 0; } diff --git a/arch/arm/include/asm/arch-mx28/regs-digctl.h b/arch/arm/include/asm/arch-mx28/regs-digctl.h index 9a63594..247da6e 100644 --- a/arch/arm/include/asm/arch-mx28/regs-digctl.h +++ b/arch/arm/include/asm/arch-mx28/regs-digctl.h @@ -152,4 +152,8 @@ struct mx28_digctl_regs { }; #endif +/* Product code identification */ +#define HW_DIGCTL_CHIPID_MASK (0xffff << 16) +#define HW_DIGCTL_CHIPID_MX28 (0x2800 << 16) + #endif /* __MX28_REGS_DIGCTL_H__ */ |