FreeCalypso > hg > freecalypso-sw
diff target-utils/libcommon/serio.S @ 393:d7591faa1258
target-utils serial I/O made consistent with other projects
author | Michael Spacefalcon <msokolov@ivan.Harhan.ORG> |
---|---|
date | Wed, 11 Jun 2014 17:22:55 +0000 |
parents | 40f607bb0a2c |
children |
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--- a/target-utils/libcommon/serio.S Wed Jun 11 16:38:28 2014 +0000 +++ b/target-utils/libcommon/serio.S Wed Jun 11 17:22:55 2014 +0000 @@ -20,7 +20,15 @@ ldr r2, [r1] ldrb r3, [r2, #NS16550_LSR] tst r3, #NS16550_LSR_DR - mvneq r0, #1 - bxeq lr - ldrb r0, [r2, #NS16550_RBR] + ldrneb r0, [r2, #NS16550_RBR] + mvneq r0, #0 bx lr + + .global serial_flush +serial_flush: + ldr r1, =uart_base + ldr r2, [r1] +1: ldrb r3, [r2, #NS16550_LSR] + tst r3, #NS16550_LSR_TEMP + beq 1b + bx lr