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f6b0115a96
Allow PSCI layer to handle any SiP service functions added by platform vendors. PSCI layer will look for SiP service function in the SiP function table located in '._secure_svc_tbl_entries' section if the SMC function identifier is not found in the PSCI standard functions table. Use DECLARE_SECURE_SVC macro to declare and add platform specific SiP service function. This new section '._secure_svc_tbl_entries' is located next to '._secure.text' section. Refer to arch/arm/cpu/armv8/u-boot.lds. Signed-off-by: Chee Hong Ang <chee.hong.ang@intel.com>
61 lines
1.4 KiB
C
61 lines
1.4 KiB
C
#ifndef __ASM_SECURE_H
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#define __ASM_SECURE_H
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#include <config.h>
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#define __secure __attribute__ ((section ("._secure.text")))
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#define __secure_data __attribute__ ((section ("._secure.data")))
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#ifndef __ASSEMBLY__
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typedef struct secure_svc_tbl {
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u32 id;
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#ifdef CONFIG_ARMV8_PSCI
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u8 pad[4];
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#endif
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void *func;
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} secure_svc_tbl_t;
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/*
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* Macro to declare a SiP function service in '_secure_svc_tbl_entries' section
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*/
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#define DECLARE_SECURE_SVC(_name, _id, _fn) \
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static const secure_svc_tbl_t __secure_svc_ ## _name \
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__attribute__((used, section("._secure_svc_tbl_entries"))) \
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= { \
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.id = _id, \
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.func = _fn }
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#else
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#ifdef CONFIG_ARMV8_PSCI
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#define SECURE_SVC_TBL_OFFSET 16
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#else
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#define SECURE_SVC_TBL_OFFSET 8
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#endif
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#endif /* __ASSEMBLY__ */
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#if defined(CONFIG_ARMV7_SECURE_BASE) || defined(CONFIG_ARMV8_SECURE_BASE)
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/*
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* Warning, horror ahead.
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*
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* The target code lives in our "secure ram", but u-boot doesn't know
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* that, and has blindly added reloc_off to every relocation
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* entry. Gahh. Do the opposite conversion. This hack also prevents
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* GCC from generating code veeners, which u-boot doesn't relocate at
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* all...
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*/
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#define secure_ram_addr(_fn) ({ \
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DECLARE_GLOBAL_DATA_PTR; \
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void *__fn = _fn; \
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typeof(_fn) *__tmp = (__fn - gd->reloc_off); \
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__tmp; \
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})
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#else
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#define secure_ram_addr(_fn) (_fn)
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#endif
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#endif
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