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author | Sanchayan Maity <maitysanchayan@gmail.com> | 2015-04-15 16:24:24 +0530 |
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committer | Tom Rini <trini@konsulko.com> | 2015-04-23 14:56:08 -0400 |
commit | 1db503c4b982a06741142588756fdd788474034c (patch) | |
tree | 6799a30b73580e8369b93b71650fd1f8e0a4f942 /arch/arm/cpu/armv7/vf610 | |
parent | 8b4f9afac0642cea73084401d07f791f2ac63104 (diff) | |
download | u-boot-imx-1db503c4b982a06741142588756fdd788474034c.zip u-boot-imx-1db503c4b982a06741142588756fdd788474034c.tar.gz u-boot-imx-1db503c4b982a06741142588756fdd788474034c.tar.bz2 |
ARM: vf610: Add SoC and CPU type detection
Vybrid product family consists of several rather similar SoC which
can be determined by softare during boot time. This allows use of
variable ${soc} for Linux device tree files. Detect VF5xx CPU's by
reading the CPU count register. We can determine the second number
of the CPU type (VF6x0) which indicates the presence of a L2 cache.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Sanchayan Maity <maitysanchayan@gmail.com>
Diffstat (limited to 'arch/arm/cpu/armv7/vf610')
-rw-r--r-- | arch/arm/cpu/armv7/vf610/generic.c | 29 |
1 files changed, 27 insertions, 2 deletions
diff --git a/arch/arm/cpu/armv7/vf610/generic.c b/arch/arm/cpu/armv7/vf610/generic.c index 92aaad9..3bdc221 100644 --- a/arch/arm/cpu/armv7/vf610/generic.c +++ b/arch/arm/cpu/armv7/vf610/generic.c @@ -18,6 +18,8 @@ DECLARE_GLOBAL_DATA_PTR; #endif +static char soc_type[] = "xx0"; + #ifdef CONFIG_MXC_OCOTP void enable_ocotp_clk(unsigned char enable) { @@ -284,14 +286,37 @@ static char *get_reset_cause(void) int print_cpuinfo(void) { - printf("CPU: Freescale Vybrid VF610 at %d MHz\n", - mxc_get_clock(MXC_ARM_CLK) / 1000000); + printf("CPU: Freescale Vybrid VF%s at %d MHz\n", + soc_type, mxc_get_clock(MXC_ARM_CLK) / 1000000); printf("Reset cause: %s\n", get_reset_cause()); return 0; } #endif +int arch_cpu_init(void) +{ + struct mscm *mscm = (struct mscm *)MSCM_BASE_ADDR; + + soc_type[0] = mscm->cpxcount ? '6' : '5'; /*Dual Core => VF6x0 */ + soc_type[1] = mscm->cpxcfg1 ? '1' : '0'; /* L2 Cache => VFx10 */ + + return 0; +} + +#ifdef CONFIG_ARCH_MISC_INIT +int arch_misc_init(void) +{ + char soc[6]; + + strcat(soc, "vf"); + strcat(soc, soc_type); + setenv("soc", soc); + + return 0; +} +#endif + int cpu_eth_init(bd_t *bis) { int rc = -ENODEV; |