psp_verstage: move svc to platform-specific dir

Since there are some differences between picasso PSP svc and cezanne PSP
svc, each platform should have their own svc wrapper.

Moreover cezanne PSP will drop unused parameters from
update_psp_bios_dir and save_uapp_data so make wrapper around it.

BUG=b:182477057
BRANCH=none
TEST=build psp_verstage and boot on zork

Signed-off-by: Kangheui Won <khwon@chromium.org>
Change-Id: I69f998865fc3184ea8900a431924a315c5ee9133
Reviewed-on: https://review.coreboot.org/c/coreboot/+/52307
Reviewed-by: Martin Roth <martinroth@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

3 files changed, 237 insertions, 0 deletions

diff --git a/src/soc/amd/picasso/psp_verstage/Makefile.inc b/src/soc/amd/picasso/psp_verstage/Makefile.inc
index e70360fa51..32b594d2cb 100644
--- a/src/soc/amd/picasso/psp_verstage/Makefile.inc
+++ b/src/soc/amd/picasso/psp_verstage/Makefile.inc
@@ -3,5 +3,7 @@
 verstage-generic-ccopts += -I$(src)/soc/amd/picasso/psp_verstage/include
 verstage-generic-ccopts += -I$(src)/vendorcode/amd/fsp/picasso/include
 
+verstage-y += svc.c
+
 verstage-y += $(top)/src/vendorcode/amd/fsp/picasso/bl_uapp/bl_uapp_startup.S
 verstage-y += $(top)/src/vendorcode/amd/fsp/picasso/bl_uapp/bl_uapp_end.S
diff --git a/src/soc/amd/picasso/psp_verstage/svc.c b/src/soc/amd/picasso/psp_verstage/svc.c
new file mode 100644
index 0000000000..a20c2a618f
--- /dev/null
+++ b/src/soc/amd/picasso/psp_verstage/svc.c
@@ -0,0 +1,178 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include "svc.h"
+
+#include <assert.h>
+#include <bl_uapp/bl_syscall_public.h>
+#include <psp_verstage.h>
+#include <stddef.h>
+
+void svc_exit(uint32_t status)
+{
+	uint32_t unused = 0;
+	SVC_CALL0(SVC_EXIT, unused);
+}
+
+uint32_t svc_map_user_stack(void *start_addr, void *end_addr, void *stack_va)
+{
+	uint32_t retval = 0;
+	SVC_CALL3(SVC_MAP_USER_STACK, (uint32_t)start_addr,
+			(uint32_t)end_addr, stack_va, retval);
+	return retval;
+}
+
+void svc_debug_print(const char *string)
+{
+	uint32_t unused = 0;
+	SVC_CALL1(SVC_DEBUG_PRINT, (uint32_t)string, unused);
+}
+
+void svc_debug_print_ex(uint32_t dword0,
+		uint32_t dword1, uint32_t dword2, uint32_t dword3)
+{
+	uint32_t unused = 0;
+	SVC_CALL4(SVC_DEBUG_PRINT_EX, dword0, dword1, dword2, dword3, unused);
+}
+
+uint32_t svc_wait_10ns_multiple(uint32_t multiple)
+{
+	uint32_t retval = 0;
+	SVC_CALL1(SVC_WAIT_10NS_MULTIPLE, multiple, retval);
+	return retval;
+}
+
+uint32_t svc_get_boot_mode(uint32_t *boot_mode)
+{
+	uint32_t retval = 0;
+	SVC_CALL1(SVC_GET_BOOT_MODE, boot_mode, retval);
+	return retval;
+}
+
+void svc_delay_in_usec(uint32_t delay)
+{
+	uint32_t unused = 0;
+	SVC_CALL1(SVC_DELAY_IN_MICRO_SECONDS, delay, unused);
+}
+
+uint32_t svc_get_spi_rom_info(struct spirom_info *spi_rom_info)
+{
+	uint32_t retval = 0;
+	SVC_CALL1(SVC_GET_SPI_INFO, (uint32_t)spi_rom_info, retval);
+	return retval;
+}
+
+uint32_t svc_map_fch_dev(enum fch_io_device io_device,
+		uint32_t arg1, uint32_t arg2, void **io_device_axi_addr)
+{
+	uint32_t retval = 0;
+	assert(io_device < FCH_IO_DEVICE_END);
+	SVC_CALL4(SVC_MAP_FCH_IO_DEVICE, io_device, arg1, arg2,
+			(uint32_t)io_device_axi_addr, retval);
+	return retval;
+}
+
+uint32_t svc_unmap_fch_dev(enum fch_io_device io_device, void *io_device_axi_addr)
+{
+	uint32_t retval = 0;
+	assert(io_device < FCH_IO_DEVICE_END);
+	SVC_CALL2(SVC_UNMAP_FCH_IO_DEVICE, (uint32_t)io_device,
+			(uint32_t)io_device_axi_addr, retval);
+	return retval;
+}
+
+uint32_t svc_map_spi_rom(void *spi_rom_addr,
+		uint32_t size, void **spi_rom_axi_addr)
+{
+	uint32_t retval = 0;
+	SVC_CALL3(SVC_MAP_SPIROM_DEVICE, spi_rom_addr, size,
+			(uint32_t)spi_rom_axi_addr, retval);
+	return retval;
+}
+
+uint32_t svc_unmap_spi_rom(void *spi_rom_addr)
+{
+	uint32_t retval = 0;
+	SVC_CALL1(SVC_UNMAP_SPIROM_DEVICE, (uint32_t)spi_rom_addr, retval);
+	return retval;
+}
+
+uint32_t update_psp_bios_dir(uint32_t *psp_dir_offset, uint32_t *bios_dir_offset)
+{
+	return svc_update_psp_bios_dir(psp_dir_offset, bios_dir_offset,
+				       DIR_OFFSET_SET);
+}
+
+uint32_t svc_update_psp_bios_dir(uint32_t *psp_dir_offset,
+		uint32_t *bios_dir_offset, enum dir_offset_operation operation)
+{
+	uint32_t retval = 0;
+	assert(operation < DIR_OFFSET_OPERATION_MAX);
+	SVC_CALL3(SVC_UPDATE_PSP_BIOS_DIR, (uint32_t)psp_dir_offset,
+			(uint32_t)bios_dir_offset, operation, retval);
+	return retval;
+}
+
+uint32_t save_uapp_data(void *address, uint32_t size)
+{
+	return svc_save_uapp_data(UAPP_COPYBUF_CHROME_WORKBUF, address, size);
+}
+
+uint32_t svc_save_uapp_data(enum uapp_copybuf type, void *address,
+		uint32_t size)
+{
+	uint32_t retval = 0;
+	assert(type < UAPP_COPYBUF_MAX);
+	SVC_CALL3(SVC_COPY_DATA_FROM_UAPP, type, (uint32_t)address, size, retval);
+	return retval;
+}
+
+uint32_t svc_read_timer_val(enum psp_timer_type type, uint64_t *counter_value)
+{
+	unsigned int retval = 0;
+	assert(type < PSP_TIMER_TYPE_MAX);
+	SVC_CALL2(SVC_READ_TIMER_VAL, type, counter_value, retval);
+	return retval;
+}
+
+uint32_t svc_reset_system(enum reset_type reset_type)
+{
+	unsigned int retval = 0;
+	assert(reset_type < RESET_TYPE_MAX);
+	SVC_CALL1(SVC_RESET_SYSTEM, reset_type, retval);
+	return retval;
+}
+
+uint32_t svc_write_postcode(uint32_t postcode)
+{
+	uint32_t retval = 0;
+	SVC_CALL1(SVC_WRITE_POSTCODE, postcode, retval);
+	return retval;
+}
+
+uint32_t svc_get_max_workbuf_size(uint32_t *size)
+{
+	uint32_t retval = 0;
+	SVC_CALL1(SVC_GET_MAX_WORKBUF_SIZE, size, retval);
+	return retval;
+}
+
+uint32_t svc_crypto_sha(struct sha_generic_data *sha_op, enum sha_operation_mode sha_mode)
+{
+	uint32_t retval = 0;
+	SVC_CALL2(SVC_SHA, sha_op, sha_mode, retval);
+	return retval;
+}
+
+uint32_t svc_rsa_pkcs_verify(const struct rsapkcs_verify_params *rsa_params)
+{
+	uint32_t retval = 0;
+	SVC_CALL1(SVC_RSAPKCS_VERIFY, rsa_params, retval);
+	return retval;
+}
+
+uint32_t svc_modexp(struct mod_exp_params *mod_exp_param)
+{
+	uint32_t retval = 0;
+	SVC_CALL1(SVC_MODEXP, mod_exp_param, retval);
+	return retval;
+}
diff --git a/src/soc/amd/picasso/psp_verstage/svc.h b/src/soc/amd/picasso/psp_verstage/svc.h
new file mode 100644
index 0000000000..03bae066e0
--- /dev/null
+++ b/src/soc/amd/picasso/psp_verstage/svc.h
@@ -0,0 +1,57 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef PSP_VERSTAGE_SVC_H
+#define PSP_VERSTAGE_SVC_H
+
+#define SVC_CALL4(SVC_ID, R0, R1, R2, R3, Ret) \
+	__asm__ __volatile__ ( \
+	"mov r0, %[reg0]\n\t" \
+	"mov r1, %[reg1]\n\t" \
+	"mov r2, %[reg2]\n\t" \
+	"mov r3, %[reg3]\n\t" \
+	"svc %[id]\n\t" \
+	"mov %[result], r0\n\t" \
+	: [result] "=r" (Ret) /* output */ \
+	: [id] "i" (SVC_ID), [reg0] "r" (R0), [reg1] "r" (R1), [reg2] "r" (R2), \
+		[reg3] "r" (R3) /* input(s) */ \
+	: "r0", "r1", "r2", "r3", "memory", "cc" /* list of clobbered registers */);
+
+#define SVC_CALL3(SVC_ID, R0,  R1, R2, Ret) \
+	__asm__ __volatile__ ( \
+	"mov r0, %[reg0]\n\t" \
+	"mov r1, %[reg1]\n\t" \
+	"mov r2, %[reg2]\n\t" \
+	"svc %[id]\n\t" \
+	"mov %[result], r0\n\t" \
+	: [result] "=r" (Ret) /* output */ \
+	: [id] "i" (SVC_ID), [reg0] "r" (R0), [reg1] "r" (R1), [reg2] "r" (R2) \
+	: "r0", "r1", "r2", "memory", "cc" /* list of clobbered registers */);
+
+#define SVC_CALL2(SVC_ID, R0, R1, Ret) \
+	__asm__ __volatile__ ( \
+	"mov r0, %[reg0]\n\t" \
+	"mov r1, %[reg1]\n\t" \
+	"svc %[id]\n\t" \
+	"mov %[result], r0\n\t" \
+	: [result] "=r" (Ret) /* output */ \
+	: [id] "i" (SVC_ID), [reg0] "r" (R0), [reg1] "r" (R1)/* input(s) */ \
+	: "r0", "r1", "memory", "cc" /* list of clobbered registers */);
+
+#define SVC_CALL1(SVC_ID, R0, Ret) \
+	__asm__ __volatile__ ( \
+	"mov r0, %[reg0]\n\t" \
+	"svc %[id]\n\t" \
+	"mov %[result], r0\n\t" \
+	: [result] "=r" (Ret) /* output */ \
+	: [id] "i" (SVC_ID), [reg0] "r" (R0) /* input(s) */ \
+	: "r0", "memory", "cc" /* list of clobbered registers */);
+
+#define SVC_CALL0(SVC_ID, Ret) \
+	__asm__ __volatile__ ( \
+	"svc %[id]\n\t" \
+	"mov %[result], r0\n\t" \
+	: [result] "=r" (Ret) /* output */ \
+	: [id] "I" (SVC_ID) /* input(s) */ \
+	: "memory", "cc" /* list of clobbered registers */);
+
+#endif /* PSP_VERSTAGE_SVC_H */