Merge branch 'master' of git://www.denx.de/git/u-boot-mpc85xx

1 files changed, 95 insertions, 0 deletions

diff --git a/board/freescale/common/cadmus.c b/board/freescale/common/cadmus.c
new file mode 100644
index 0000000..5f86de5
--- /dev/null
+++ b/board/freescale/common/cadmus.c
@@ -0,0 +1,95 @@
+/*
+ * Copyright 2004 Freescale Semiconductor.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+
+#include <common.h>
+
+
+/*
+ * CADMUS Board System Registers
+ */
+#ifndef CFG_CADMUS_BASE_REG
+#define CFG_CADMUS_BASE_REG	(CADMUS_BASE_ADDR + 0x4000)
+#endif
+
+typedef struct cadmus_reg {
+    u_char cm_ver;		/* Board version */
+    u_char cm_csr;		/* General control/status */
+    u_char cm_rst;		/* Reset control */
+    u_char cm_hsclk;		/* High speed clock */
+    u_char cm_hsxclk;		/* High speed clock extended */
+    u_char cm_led;		/* LED data */
+    u_char cm_pci;		/* PCI control/status */
+    u_char cm_dma;		/* DMA control */
+    u_char cm_reserved[248];	/* Total 256 bytes */
+} cadmus_reg_t;
+
+
+unsigned int
+get_board_version(void)
+{
+	volatile cadmus_reg_t *cadmus = (cadmus_reg_t *)CFG_CADMUS_BASE_REG;
+
+	return cadmus->cm_ver;
+}
+
+
+unsigned long
+get_clock_freq(void)
+{
+	volatile cadmus_reg_t *cadmus = (cadmus_reg_t *)CFG_CADMUS_BASE_REG;
+
+	uint pci1_speed = (cadmus->cm_pci >> 2) & 0x3; /* PSPEED in [4:5] */
+
+	if (pci1_speed == 0) {
+		return 33000000;
+	} else if (pci1_speed == 1) {
+		return 66000000;
+	} else {
+		/* Really, unknown. Be safe? */
+		return 33000000;
+	}
+}
+
+
+unsigned int
+get_pci_slot(void)
+{
+	volatile cadmus_reg_t *cadmus = (cadmus_reg_t *)CFG_CADMUS_BASE_REG;
+
+	/*
+	 * PCI slot in USER bits CSR[6:7] by convention.
+	 */
+	return ((cadmus->cm_csr >> 6) & 0x3) + 1;
+}
+
+
+unsigned int
+get_pci_dual(void)
+{
+	volatile cadmus_reg_t *cadmus = (cadmus_reg_t *)CFG_CADMUS_BASE_REG;
+
+	/*
+	 * PCI DUAL in CM_PCI[3]
+	 */
+	return cadmus->cm_pci & 0x10;
+}