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AArch32: Add support to PSCI lib

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This patch adds AArch32 support to PSCI library, as follows :

* The `psci_helpers.S` is implemented for AArch32.

* AArch32 version of internal helper function `psci_get_ns_ep_info()` is
  defined.

* The PSCI Library is responsible for the Non Secure context initialization.
  Hence a library interface `psci_prepare_next_non_secure_ctx()` is introduced
  to enable EL3 runtime firmware to initialize the non secure context without
  invoking context management library APIs.

Change-Id: I25595b0cc2dbfdf39dbf7c589b875cba33317b9d
This commit is contained in:
Soby Mathew 2016-05-05 14:11:23 +01:00
parent e33b78a658
commit 727e5238fa
5 changed files with 251 additions and 6 deletions
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12
lib/psci/psci_setup.c
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@ -278,3 +278,15 @@ void psci_arch_setup(void)
/* Initialize the cpu_ops pointer. */
init_cpu_ops();
}
/******************************************************************************
* PSCI Library interface to initialize the cpu context for the next non
* secure image during cold boot. The relevant registers in the cpu context
* need to be retrieved and programmed on return from this interface.
*****************************************************************************/
void psci_prepare_next_non_secure_ctx(entry_point_info_t *next_image_info)
{
assert(GET_SECURITY_STATE(next_image_info->h.attr) == NON_SECURE);
cm_init_my_context(next_image_info);
cm_prepare_el3_exit(NON_SECURE);
}