⚠️ The code is based on: https://gitlab.com/riseproject/riscv-optee/opensbi/-/tree/dev-optee-mpxy

Commit ID: 7d4c90953afe3bd86f9e2501bd4c2501e8db1898

  • init_coldboot()
  • sbi_mpxy_init()
    • Allocate struct mpxy_state for each domain.
    • sbi_platform_mpxy_init()
      • Call platform-defined mpxy_init().
        • e.g. For generic platform: fdt_mpxy_init().
  • fdt_mpxy_init()
    • Iterate MPXY drivers in fdt_mpxy_drivers[].

      • MPXY drivers are generated at compile time:

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        // lib/utils/mpxy/objects.mk

libsbiutils-objs-$(CONFIG_FDT_MPXY) += mpxy/fdt_mpxy.o
libsbiutils-objs-$(CONFIG_FDT_MPXY) += mpxy/fdt_mpxy_drivers.o

carray-fdt_mpxy_drivers-$(CONFIG_FDT_MPXY_RPMI_MBOX) += fdt_mpxy_rpmi_mbox
libsbiutils-objs-$(CONFIG_FDT_MPXY_RPMI_MBOX) += mpxy/fdt_mpxy_rpmi_mbox.o
carray-fdt_mpxy_drivers-$(CONFIG_FDT_MPXY_MM) += fdt_mpxy_mm
libsbiutils-objs-$(CONFIG_FDT_MPXY_MM) += mpxy/fdt_mpxy_mm.o
carray-fdt_mpxy_drivers-$(CONFIG_FDT_MPXY_OPTEED) += fdt_mpxy_opteed
libsbiutils-objs-$(CONFIG_FDT_MPXY_OPTEED) += mpxy/fdt_mpxy_opteed.o

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        // lib/utils/mpxy/fdt_mpxy_drivers.carray

HEADER: sbi_utils/mpxy/fdt_mpxy.h
TYPE: struct fdt_mpxy
NAME: fdt_mpxy_drivers

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        // include/sbi_utils/mpxy/fdt_mpxy.h

struct fdt_mpxy {
	const struct fdt_match *match_table;
	int (*init)(void *fdt, int nodeoff, const struct fdt_match *match);
	void (*exit)(void);
};

      • Call drv->init().

  • sbi_ecall_mpxy_handler()