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authorFurquan Shaikh <furquan@google.com>2019-06-03 19:02:31 -0700
committerPatrick Georgi <pgeorgi@google.com>2019-06-04 11:20:05 +0000
commita99ed13e3397bc536012120aab8cadb827913863 (patch)
treede877c8167f02f19b53afaba5867a0a0e66b7c46 /payloads/libpayload
parent3cae9afbf91d7b164a033968350f8f60b84301b9 (diff)
downloadcoreboot-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>
Diffstat (limited to 'payloads/libpayload')
-rw-r--r--payloads/libpayload/drivers/i8042/keyboard.c22
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);
}