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| author | Shaveta Leekha <shaveta@freescale.com> | 2014-07-02 11:44:15 +0530 |
|---|---|---|
| committer | York Sun <yorksun@freescale.com> | 2014-08-20 10:44:15 -0700 |
| commit | 390619ddb390b08d77a23dd6531d2ec4866fb1bd (patch) | |
| tree | 7fa9077fff05e481b2bf11d3e188b5e8e3128278 | |
| parent | ce249d956c820af4b9790406461b1748741d0478 (diff) | |
| download | u-boot-imx-390619ddb390b08d77a23dd6531d2ec4866fb1bd.zip u-boot-imx-390619ddb390b08d77a23dd6531d2ec4866fb1bd.tar.gz u-boot-imx-390619ddb390b08d77a23dd6531d2ec4866fb1bd.tar.bz2 | |
powerpc/mpc85xx: Enabling CPC conditionally based on hwconfig options
If hwconfig does not contains "en_cpc" then by default all cpcs are enabled
If this config is defined then only those individual cpcs which are defined
in the subargument of "en_cpc" will be enabled e.g en_cpc:cpc1,cpc2; (this
will enable cpc1 and cpc2) or en_cpc:cpc2; (this enables just cpc2)
Signed-off-by: Shaveta Leekha <shaveta@freescale.com>
Signed-off-by: Sandeep Singh <Sandeep@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
| -rw-r--r-- | arch/powerpc/cpu/mpc85xx/cpu_init.c | 28 |
1 files changed, 26 insertions, 2 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/cpu_init.c b/arch/powerpc/cpu/mpc85xx/cpu_init.c index b237505..5bfab70 100644 --- a/arch/powerpc/cpu/mpc85xx/cpu_init.c +++ b/arch/powerpc/cpu/mpc85xx/cpu_init.c @@ -254,12 +254,36 @@ static void enable_tdm_law(void) void enable_cpc(void) { int i; + int ret; u32 size = 0; - + u32 cpccfg0; + char buffer[HWCONFIG_BUFFER_SIZE]; + char cpc_subarg[16]; + bool have_hwconfig = false; + int cpc_args = 0; cpc_corenet_t *cpc = (cpc_corenet_t *)CONFIG_SYS_FSL_CPC_ADDR; + /* Extract hwconfig from environment */ + ret = getenv_f("hwconfig", buffer, sizeof(buffer)); + if (ret > 0) { + /* + * If "en_cpc" is not defined in hwconfig then by default all + * cpcs are enable. If this config is defined then individual + * cpcs which have to be enabled should also be defined. + * e.g en_cpc:cpc1,cpc2; + */ + if (hwconfig_f("en_cpc", buffer)) + have_hwconfig = true; + } + for (i = 0; i < CONFIG_SYS_NUM_CPC; i++, cpc++) { - u32 cpccfg0 = in_be32(&cpc->cpccfg0); + if (have_hwconfig) { + sprintf(cpc_subarg, "cpc%u", i + 1); + cpc_args = hwconfig_sub_f("en_cpc", cpc_subarg, buffer); + if (cpc_args == 0) + continue; + } + cpccfg0 = in_be32(&cpc->cpccfg0); size += CPC_CFG0_SZ_K(cpccfg0); #ifdef CONFIG_SYS_FSL_ERRATUM_CPC_A002 |