Author: mmel
Date: Tue Oct 18 12:21:45 2016
New Revision: 307556
URL: https://svnweb.freebsd.org/changeset/base/307556

Log:
  TEGRA: Really implement early printf. The original version
  was cut&pasted from another SoC.
  
  Pointy-hat to: mmel
  
  MFC after: 2 weeks

Modified:
  head/sys/arm/nvidia/tegra124/tegra124_machdep.c

Modified: head/sys/arm/nvidia/tegra124/tegra124_machdep.c
==============================================================================
--- head/sys/arm/nvidia/tegra124/tegra124_machdep.c     Tue Oct 18 10:33:28 
2016        (r307555)
+++ head/sys/arm/nvidia/tegra124/tegra124_machdep.c     Tue Oct 18 12:21:45 
2016        (r307556)
@@ -120,18 +120,18 @@ tegra124_cpu_reset(platform_t plat)
 
 /*
  * Early putc routine for EARLY_PRINTF support.  To use, add to kernel config:
- *   option SOCDEV_PA=0x02000000
- *   option SOCDEV_VA=0x02000000
+ *   option SOCDEV_PA=0x70000000
+ *   option SOCDEV_VA=0x70000000
  *   option EARLY_PRINTF
  */
-#if 0
+#ifdef EARLY_PRINTF
 static void
 tegra124_early_putc(int c)
 {
-       volatile uint32_t * UART_STAT_REG = (uint32_t *)0x02020098;
-       volatile uint32_t * UART_TX_REG   = (uint32_t *)0x02020040;
-       const uint32_t      UART_TXRDY    = (1 << 3);
 
+       volatile uint32_t * UART_STAT_REG = (uint32_t *)(0x70006314);
+       volatile uint32_t * UART_TX_REG   = (uint32_t *)(0x70006300);
+       const uint32_t      UART_TXRDY    = (1 << 6);
        while ((*UART_STAT_REG & UART_TXRDY) == 0)
                continue;
        *UART_TX_REG = c;
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