Commit f55b32e7 authored by Max Filippov's avatar Max Filippov
Browse files

hw/xtensa/xtfpga: implement initrd loading 



Signed-off-by: default avatarMax Filippov <jcmvbkbc@gmail.com>
parent 996dfe98

hw/xtensa/xtfpga.c

+24 −0
Original line number Diff line number Diff line
@@ -180,6 +180,7 @@ static void lx_init(const LxBoardDesc *board, MachineState *machine) 
    const char *kernel_filename = qemu_opt_get(machine_opts, "kernel");

    const char *kernel_cmdline = qemu_opt_get(machine_opts, "append");

    const char *dtb_filename = qemu_opt_get(machine_opts, "dtb");

    const char *initrd_filename = qemu_opt_get(machine_opts, "initrd");

    int n;



    if (!cpu_model) {
@@ -263,6 +264,9 @@ static void lx_init(const LxBoardDesc *board, MachineState *machine) 
        if (dtb_filename) {

            bp_size += get_tag_size(sizeof(uint32_t));

        }

        if (initrd_filename) {

            bp_size += get_tag_size(sizeof(BpMemInfo));

        }



        /* Put kernel bootparameters to the end of that SRAM */

        tagptr = (tagptr - bp_size) & ~0xff;
@@ -289,6 +293,26 @@ static void lx_init(const LxBoardDesc *board, MachineState *machine) 
                                 sizeof(dtb_addr), &dtb_addr);

            cur_lowmem = QEMU_ALIGN_UP(cur_lowmem + fdt_size, 4096);

        }

        if (initrd_filename) {

            BpMemInfo initrd_location = { 0 };

            int initrd_size = load_ramdisk(initrd_filename, cur_lowmem,

                                           lowmem_end - cur_lowmem);



            if (initrd_size < 0) {

                initrd_size = load_image_targphys(initrd_filename,

                                                  cur_lowmem,

                                                  lowmem_end - cur_lowmem);

            }

            if (initrd_size < 0) {

                error_report("could not load initrd '%s'\n", initrd_filename);

                exit(EXIT_FAILURE);

            }

            initrd_location.start = tswap32(cur_lowmem);

            initrd_location.end = tswap32(cur_lowmem + initrd_size);

            cur_tagptr = put_tag(cur_tagptr, BP_TAG_INITRD,

                                 sizeof(initrd_location), &initrd_location);

            cur_lowmem = QEMU_ALIGN_UP(cur_lowmem + initrd_size, 4096);

        }

        cur_tagptr = put_tag(cur_tagptr, BP_TAG_LAST, 0, NULL);

        env->regs[2] = tagptr;