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powerpc/mpc85xx: Enabling CPC conditionally based on hwconfig options

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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>
This commit is contained in:
Shaveta Leekha
2014-07-02 11:44:15 +05:30
committed by York Sun
parent ce249d956c
commit 390619ddb3
1 changed files with 26 additions and 2 deletions
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28
arch/powerpc/cpu/mpc85xx/cpu_init.c
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@@ -254,12 +254,36 @@ static void enable_tdm_law(void)
void enable_cpc(void) void enable_cpc(void)
{ {
int i; int i;
int ret;
u32 size = 0; 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; 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++) { 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); size += CPC_CFG0_SZ_K(cpccfg0);
#ifdef CONFIG_SYS_FSL_ERRATUM_CPC_A002 #ifdef CONFIG_SYS_FSL_ERRATUM_CPC_A002