diff options
| author | Furquan Shaikh <furquan@google.com> | 2019-06-03 19:02:31 -0700 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2019-06-04 11:20:05 +0000 |
| commit | a99ed13e3397bc536012120aab8cadb827913863 (patch) | |
| tree | de877c8167f02f19b53afaba5867a0a0e66b7c46 | |
| parent | 3cae9afbf91d7b164a033968350f8f60b84301b9 (diff) | |
| download | coreboot-a99ed13e3397bc536012120aab8cadb827913863.tar.xz | |
libpayload/i8042/keyboard: Fix return value check for keyboard_cmd
CB:32951 ("libpayload: Reset PS/2 keyboard") added a call to reset
keyboard and check the return value of keyboard_cmd() to compare
against I8042_KBCMD_ACK. However, keyboard_cmd() already checks for
ACK and returns 1 or 0 based on whether ACK is received.
This change fixes the check introduced by CB:32951 to compare against
0 just like the other checks for keyboard_cmd(). Additionally, it adds
error messages for all failed commands in keyboard_init() to make the
prints consistent in case of failure.
BUG=b:134366527
TEST=Verified that logs do not contain "ERROR: Keyboard reset failed"
anymore.
Change-Id: Idcadaae12e0a44e404a1d98c6deb633d97058203
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33185
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Frank Wu <frank_wu@compal.corp-partner.google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
| -rw-r--r-- | payloads/libpayload/drivers/i8042/keyboard.c | 22 |
1 files changed, 15 insertions, 7 deletions
diff --git a/payloads/libpayload/drivers/i8042/keyboard.c b/payloads/libpayload/drivers/i8042/keyboard.c index 12255fb7f8..240385ce6d 100644 --- a/payloads/libpayload/drivers/i8042/keyboard.c +++ b/payloads/libpayload/drivers/i8042/keyboard.c @@ -172,7 +172,7 @@ static unsigned char keyboard_cmd(unsigned char cmd) { i8042_write_data(cmd); - return i8042_wait_read_ps2() == 0xfa; + return i8042_wait_read_ps2() == I8042_KBCMD_ACK; } int keyboard_havechar(void) @@ -319,32 +319,40 @@ void keyboard_init(void) /* Reset keyboard and self test (keyboard side) */ ret = keyboard_cmd(I8042_KBCMD_RESET); - if (ret != I8042_KBCMD_ACK) { - printf("ERROR: Keyboard reset failed ACK: 0x%x\n", ret); + if (!ret) { + printf("ERROR: Keyboard reset failed!\n"); return; } /* Set scancode set 1 */ ret = keyboard_cmd(I8042_KBCMD_SET_SCANCODE); - if (!ret && !CONFIG(LP_PC_KEYBOARD_IGNORE_INIT_FAILURE)) + if (!ret && !CONFIG(LP_PC_KEYBOARD_IGNORE_INIT_FAILURE)) { + printf("ERROR: Keyboard set scancode failed!\n"); return; + } ret = keyboard_cmd(I8042_SCANCODE_SET_1); - if (!ret && !CONFIG(LP_PC_KEYBOARD_IGNORE_INIT_FAILURE)) + if (!ret && !CONFIG(LP_PC_KEYBOARD_IGNORE_INIT_FAILURE)) { + printf("ERROR: Keyboard scancode set#1 failed!\n"); return; + } /* * Set default parameters. * Fix for broken QEMU ps/2 make scancodes. */ ret = keyboard_cmd(0xf6); - if (!ret) + if (!ret) { + printf("ERROR: Keyboard set default params failed!\n"); return; + } /* Enable scanning */ ret = keyboard_cmd(I8042_KBCMD_EN); - if (!ret && !CONFIG(LP_PC_KEYBOARD_IGNORE_INIT_FAILURE)) + if (!ret && !CONFIG(LP_PC_KEYBOARD_IGNORE_INIT_FAILURE)) { + printf("ERROR: Keyboard enable scanning failed!\n"); return; + } console_add_input_driver(&cons); } |