platform: add a vendor_ext_provider override
From: Heiko Stuebner <heiko@...> Date: Thu, 17 Mar 2022 23:00:50 +0100
Commit-Message
The vendor_ext_provider is already meant to allow vendor extensions to ecalls, so allow fdt-matched platforms to define their own override. Signed-off-by: Heiko Stuebner <heiko@...>
Patch-Comment
platform/generic/include/platform_override.h | 5 +++++ platform/generic/platform.c | 13 +++++++++++++ 2 files changed, 18 insertions(+)
Statistics
- 18 lines added
- 0 lines removed
Changes
----------------- platform/generic/include/platform_override.h -----------------
index 4af8754..3d41a19 100644
@@ -10,6 +10,7 @@
#ifndef __PLATFORM_OVERRIDE_H__
#define __PLATFORM_OVERRIDE_H__
+#include <sbi/sbi_trap.h>
#include <sbi/sbi_types.h>
struct platform_override {
@@ -21,6 +22,10 @@ struct platform_override {
void (*early_exit)(const struct fdt_match *match);
void (*final_exit)(const struct fdt_match *match);
int (*fdt_fixup)(void *fdt, const struct fdt_match *match);
+ int (*vendor_ext_provider)(long extid, long funcid,
+ const struct sbi_trap_regs *regs,
+ unsigned long *out_value,
+ struct sbi_trap_info *out_trap);
};
#endif
------------------------- platform/generic/platform.c --------------------------
index bc6e761..f05da8e 100644
@@ -209,6 +209,18 @@ static uint64_t generic_pmu_xlate_to_mhpmevent(uint32_t event_idx,
return evt_val;
}
+static int generic_vendor_ext_provider(long extid, long funcid,
+ const struct sbi_trap_regs *regs,
+ unsigned long *out_value,
+ struct sbi_trap_info *out_trap)
+{
+ if (generic_plat && generic_plat->vendor_ext_provider)
+ return generic_plat->vendor_ext_provider(extid, funcid, regs,
+ out_value, out_trap);
+
+ return SBI_ENOTSUPP;
+}
+
const struct sbi_platform_operations platform_ops = {
.nascent_init = generic_nascent_init,
.early_init = generic_early_init,
@@ -225,6 +237,7 @@ const struct sbi_platform_operations platform_ops = {
.get_tlbr_flush_limit = generic_tlbr_flush_limit,
.timer_init = fdt_timer_init,
.timer_exit = fdt_timer_exit,
+ .vendor_ext_provider = generic_vendor_ext_provider,
};
struct sbi_platform platform = {