X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=cpu%2Fmpc8xx%2Fcpu.c;h=ec6a3fd5d6921be5812172b6170c71f29ad3608d;hb=225f0eaa745adfae05931848543d99942798756a;hp=89a176e426576d78590f8c2f090ace1ae40afc3a;hpb=66ca92a5ba882807ba8ed8f772c0fc22b25976cc;p=oweals%2Fu-boot.git

diff --git a/cpu/mpc8xx/cpu.c b/cpu/mpc8xx/cpu.c
index 89a176e426..ec6a3fd5d6 100644
--- a/cpu/mpc8xx/cpu.c
+++ b/cpu/mpc8xx/cpu.c
@@ -39,6 +39,14 @@
 #include <mpc8xx.h>
 #include <asm/cache.h>
 
+#if defined(CONFIG_OF_LIBFDT)
+#include <libfdt.h>
+#include <libfdt_env.h>
+#include <fdt_support.h>
+#endif
+
+DECLARE_GLOBAL_DATA_PTR;
+
 static char *cpu_warning = "\n         " \
 	"*** Warning: CPU Core has Silicon Bugs -- Check the Errata ***";
 
@@ -69,14 +77,15 @@ static int check_CPU (long clock, uint pvr, uint immr)
 
 	k = (immr << 16) | *((ushort *) & immap->im_cpm.cp_dparam[0xB0]);
 	m = 0;
+	suf = "";
 
 	/*
 	 * Some boards use sockets so different CPUs can be used.
 	 * We have to check chip version in run time.
 	 */
 	switch (k) {
-	case 0x00020001: pre = 'P'; suf = ""; break;
-	case 0x00030001: suf = ""; break;
+	case 0x00020001: pre = 'P'; break;
+	case 0x00030001: break;
 	case 0x00120003: suf = "A"; break;
 	case 0x00130003: suf = "A3"; break;
 
@@ -93,7 +102,11 @@ static int check_CPU (long clock, uint pvr, uint immr)
 		/* this value is not documented anywhere */
 	case 0x40000000: pre = 'P'; suf = "D"; m = 1; break;
 		/* MPC866P/MPC866T/MPC859T/MPC859DSL/MPC852T */
-	case 0x08000003: pre = 'M'; suf = ""; m = 1;
+	case 0x08010004:		/* Rev. A.0 */
+		suf = "A";
+		/* fall through */
+	case 0x08000003:		/* Rev. 0.3 */
+		pre = 'M'; m = 1;
 		if (id_str == NULL)
 			id_str =
 # if defined(CONFIG_MPC852T)
@@ -190,10 +203,17 @@ static int check_CPU (long clock, uint pvr, uint immr)
 	default: suf = NULL; break;
 	}
 
+#ifndef CONFIG_MPC857
 	if (suf)
 		printf ("%cPC862%sZPnn%s", pre, mid, suf);
 	else
 		printf ("unknown MPC862 (0x%08x)", k);
+#else
+	if (suf)
+		printf ("%cPC857TZPnn%s", pre, suf); /* only 857T tested right now! */
+	else
+		printf ("unknown MPC857 (0x%08x)", k);
+#endif
 
 	printf (" at %s MHz:", strmhz (buf, clock));
 
@@ -337,8 +357,6 @@ static int check_CPU (long clock, uint pvr, uint immr)
 
 int checkcpu (void)
 {
-	DECLARE_GLOBAL_DATA_PTR;
-
 	ulong clock = gd->cpu_clk;
 	uint immr = get_immr (0);	/* Return full IMMR contents */
 	uint pvr = get_pvr ();
@@ -456,6 +474,8 @@ void upmconfig (uint upm, uint * table, uint size)
 
 /* ------------------------------------------------------------------------- */
 
+#ifndef CONFIG_LWMON
+
 int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 {
 	ulong msr, addr;
@@ -490,6 +510,32 @@ int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 	return 1;
 }
 
+#else	/* CONFIG_LWMON */
+
+/*
+ * On the LWMON board, the MCLR reset input of the PIC's on the board
+ * uses a 47K/1n RC combination which has a 47us time  constant.  The
+ * low  signal on the HRESET pin of the CPU is only 512 clocks = 8 us
+ * and thus too short to reset the external hardware. So we  use  the
+ * watchdog to reset the board.
+ */
+int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+	/* prevent triggering the watchdog */
+	disable_interrupts ();
+
+	/* make sure the watchdog is running */
+	reset_8xx_watchdog ((immap_t *) CFG_IMMR);
+
+	/* wait for watchdog reset */
+	while (1) {};
+
+	/* NOTREACHED */
+	return 1;
+}
+
+#endif	/* CONFIG_LWMON */
+
 /* ------------------------------------------------------------------------- */
 
 /*
@@ -499,8 +545,6 @@ int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
  */
 unsigned long get_tbclk (void)
 {
-	DECLARE_GLOBAL_DATA_PTR;
-
 	uint immr = get_immr (0);	/* Return full IMMR contents */
 	volatile immap_t *immap = (volatile immap_t *)(immr & 0xFFFF0000);
 	ulong oscclk, factor, pll;
@@ -551,6 +595,9 @@ void watchdog_reset (void)
 	if (re_enable)
 		enable_interrupts ();
 }
+#endif /* CONFIG_WATCHDOG */
+
+#if defined(CONFIG_WATCHDOG) || defined(CONFIG_LWMON)
 
 void reset_8xx_watchdog (volatile immap_t * immr)
 {
@@ -587,7 +634,4 @@ void reset_8xx_watchdog (volatile immap_t * immr)
 	immr->im_siu_conf.sc_swsr = 0xaa39;	/* write magic2 */
 # endif /* CONFIG_LWMON */
 }
-
 #endif /* CONFIG_WATCHDOG */
-
-/* ------------------------------------------------------------------------- */