Author: jmcneill Date: Mon Aug 29 20:01:53 2016 New Revision: 305026 URL: https://svnweb.freebsd.org/changeset/base/305026
Log: When the EFI implementation (like U-Boot) does not support WaitForKey, we can emulate efi_cons_poll(0 with a flag and caching the last key read with ReadKeyStroke. This fixes the loader.efi countdown timer on Pine64 (and other U-Boot + EFI using platforms). Reviewed by: imp, manu Differential Revision: https://reviews.freebsd.org/D7670 Modified: head/sys/boot/efi/libefi/efi_console.c Modified: head/sys/boot/efi/libefi/efi_console.c ============================================================================== --- head/sys/boot/efi/libefi/efi_console.c Mon Aug 29 20:01:49 2016 (r305025) +++ head/sys/boot/efi/libefi/efi_console.c Mon Aug 29 20:01:53 2016 (r305026) @@ -51,6 +51,9 @@ void HO(void); void end_term(void); #endif +static EFI_INPUT_KEY key_cur; +static int key_pending; + static void efi_cons_probe(struct console *); static int efi_cons_init(int); void efi_cons_putchar(int); @@ -436,14 +439,20 @@ efi_cons_getchar() EFI_STATUS status; UINTN junk; - /* Try to read a key stroke. We wait for one if none is pending. */ - status = conin->ReadKeyStroke(conin, &key); - while (status == EFI_NOT_READY) { - /* Some EFI implementation (u-boot for example) do not support WaitForKey */ - if (conin->WaitForKey != NULL) - BS->WaitForEvent(1, &conin->WaitForKey, &junk); + if (key_pending) { + key = key_cur; + key_pending = 0; + } else { + /* Try to read a key stroke. We wait for one if none is pending. */ status = conin->ReadKeyStroke(conin, &key); + while (status == EFI_NOT_READY) { + /* Some EFI implementation (u-boot for example) do not support WaitForKey */ + if (conin->WaitForKey != NULL) + BS->WaitForEvent(1, &conin->WaitForKey, &junk); + status = conin->ReadKeyStroke(conin, &key); + } } + switch (key.ScanCode) { case 0x17: /* ESC */ return (0x1b); /* esc */ @@ -456,9 +465,20 @@ efi_cons_getchar() int efi_cons_poll() { + EFI_INPUT_KEY key; + EFI_STATUS status; + + if (conin->WaitForKey == NULL) { + if (key_pending) + return (1); + status = conin->ReadKeyStroke(conin, &key); + if (status == EFI_SUCCESS) { + key_cur = key; + key_pending = 1; + } + return (key_pending); + } - if (conin->WaitForKey == NULL) - return (1); /* This can clear the signaled state. */ return (BS->CheckEvent(conin->WaitForKey) == EFI_SUCCESS); } _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
