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authorKumar Gala <galak@kernel.crashing.org>2007-11-29 10:47:44 -0600
committerKumar Gala <galak@kernel.crashing.org>2007-12-11 22:34:20 -0600
commit415a613babb84d5e5d5b42e8e553868c71fc3a64 (patch)
tree493e5639768f924407a432bf124fa7c3e0f98f3c /board/freescale/common/cadmus.c
parentc2d943ffbfd3359b3b45d177b437379d2cb86fbf (diff)
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Move the MPC8541/MPC8555/MPC8548 CDS board under board/freescale.
Minor path corrections needed to ensure buildability. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'board/freescale/common/cadmus.c')
-rw-r--r--board/freescale/common/cadmus.c95
1 files changed, 95 insertions, 0 deletions
diff --git a/board/freescale/common/cadmus.c b/board/freescale/common/cadmus.c
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+++ b/board/freescale/common/cadmus.c
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+/*
+ * 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;
+}