Author: adrian
Date: Sun Jan 15 06:35:00 2017
New Revision: 312211
URL: https://svnweb.freebsd.org/changeset/base/312211
Log:
[ar71xx] add EARLY_PRINTF support for the rest of the non-AR933x SoCs.
Tested:
* AR934x SoC
Modified:
head/sys/mips/atheros/ar71xxreg.h
head/sys/mips/atheros/uart_bus_ar71xx.c
Modified: head/sys/mips/atheros/ar71xxreg.h
==============================================================================
--- head/sys/mips/atheros/ar71xxreg.h Sun Jan 15 04:23:20 2017
(r312210)
+++ head/sys/mips/atheros/ar71xxreg.h Sun Jan 15 06:35:00 2017
(r312211)
@@ -111,6 +111,10 @@
#define PCI_WINDOW7_CONF_ADDR 0x07000000
#define AR71XX_UART_ADDR 0x18020000
+#define AR71XX_UART_THR 0x0
+#define AR71XX_UART_LSR 0x14
+#define AR71XX_UART_LSR_THRE (1 << 5)
+#define AR71XX_UART_LSR_TEMT (1 << 6)
#define AR71XX_USB_CTRL_FLADJ 0x18030000
#define USB_CTRL_FLADJ_HOST_SHIFT 12
Modified: head/sys/mips/atheros/uart_bus_ar71xx.c
==============================================================================
--- head/sys/mips/atheros/uart_bus_ar71xx.c Sun Jan 15 04:23:20 2017
(r312210)
+++ head/sys/mips/atheros/uart_bus_ar71xx.c Sun Jan 15 06:35:00 2017
(r312211)
@@ -86,4 +86,21 @@ uart_ar71xx_probe(device_t dev)
return (uart_bus_probe(dev, 2, freq, 0, 0));
}
+#ifdef EARLY_PRINTF
+static void
+ar71xx_early_putc(int c)
+{
+ int i;
+
+ for (i = 0; i < 1000; i++) {
+ if (ATH_READ_REG(AR71XX_UART_ADDR + AR71XX_UART_LSR)
+ & AR71XX_UART_LSR_THRE)
+ break;
+ }
+
+ ATH_WRITE_REG(AR71XX_UART_ADDR + AR71XX_UART_THR, (c & 0xff));
+}
+early_putc_t *early_putc = ar71xx_early_putc;
+#endif
+
DRIVER_MODULE(uart, apb, uart_ar71xx_driver, uart_devclass, 0, 0);
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