diff --git a/arch/riscv/lib/bootm.c b/arch/riscv/lib/bootm.c index 2b5ccce933..124aeefff8 100644 --- a/arch/riscv/lib/bootm.c +++ b/arch/riscv/lib/bootm.c @@ -8,6 +8,8 @@ #include #include +#include +#include #include #include #include @@ -26,38 +28,28 @@ int arch_fixup_fdt(void *blob) return 0; } -int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images) +/** + * announce_and_cleanup() - Print message and prepare for kernel boot + * + * @fake: non-zero to do everything except actually boot + */ +static void announce_and_cleanup(int fake) { - void (*kernel)(ulong hart, void *dtb); - - /* - * allow the PREP bootm subcommand, it is required for bootm to work - */ - if (flag & BOOTM_STATE_OS_PREP) - return 0; - - if ((flag != 0) && (flag != BOOTM_STATE_OS_GO)) - return 1; - - kernel = (void (*)(ulong, void *))images->ep; - - bootstage_mark(BOOTSTAGE_ID_RUN_OS); - - debug("## Transferring control to Linux (at address %08lx) ...\n", - (ulong)kernel); - - if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len) { -#ifdef CONFIG_OF_LIBFDT - debug("using: FDT\n"); - if (image_setup_linux(images)) { - printf("FDT creation failed! hanging..."); - hang(); - } + printf("\nStarting kernel ...%s\n\n", fake ? + "(fake run for tracing)" : ""); + bootstage_mark_name(BOOTSTAGE_ID_BOOTM_HANDOFF, "start_kernel"); +#ifdef CONFIG_BOOTSTAGE_FDT + bootstage_fdt_add_report(); +#endif +#ifdef CONFIG_BOOTSTAGE_REPORT + bootstage_report(); #endif - } - /* we assume that the kernel is in place */ - printf("\nStarting kernel ...\n\n"); +#ifdef CONFIG_USB_DEVICE + udc_disconnect(); +#endif + + board_quiesce_devices(); /* * Call remove function of all devices with a removal flag set. @@ -67,11 +59,62 @@ int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images) dm_remove_devices_flags(DM_REMOVE_ACTIVE_ALL); cleanup_before_linux(); - - if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len) - kernel(csr_read(mhartid), images->ft_addr); - - /* does not return */ - - return 1; +} + +static void boot_prep_linux(bootm_headers_t *images) +{ + if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len) { +#ifdef CONFIG_OF_LIBFDT + debug("using: FDT\n"); + if (image_setup_linux(images)) { + printf("FDT creation failed! hanging..."); + hang(); + } +#endif + } else { + printf("Device tree not found or missing FDT support\n"); + hang(); + } +} + +static void boot_jump_linux(bootm_headers_t *images, int flag) +{ + void (*kernel)(ulong hart, void *dtb); + int fake = (flag & BOOTM_STATE_OS_FAKE_GO); + + kernel = (void (*)(ulong, void *))images->ep; + + bootstage_mark(BOOTSTAGE_ID_RUN_OS); + + debug("## Transferring control to Linux (at address %08lx) ...\n", + (ulong)kernel); + + announce_and_cleanup(fake); + + if (!fake) { + if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len) + kernel(csr_read(mhartid), images->ft_addr); + } +} + +int do_bootm_linux(int flag, int argc, char * const argv[], + bootm_headers_t *images) +{ + /* No need for those on RISC-V */ + if (flag & BOOTM_STATE_OS_BD_T || flag & BOOTM_STATE_OS_CMDLINE) + return -1; + + if (flag & BOOTM_STATE_OS_PREP) { + boot_prep_linux(images); + return 0; + } + + if (flag & (BOOTM_STATE_OS_GO | BOOTM_STATE_OS_FAKE_GO)) { + boot_jump_linux(images, flag); + return 0; + } + + boot_prep_linux(images); + boot_jump_linux(images, flag); + return 0; }