diff options
author | wdenk <wdenk> | 2004-10-10 21:21:55 +0000 |
---|---|---|
committer | wdenk <wdenk> | 2004-10-10 21:21:55 +0000 |
commit | 03f5c55021c2d6297e66cc11bfea75f149a5d71c (patch) | |
tree | 658bdbc75b90b7a122c061fa2aca6d6eb94dfb67 /board/cds/common/cadmus.c | |
parent | cf33678e51e02143ed67850b3f13646fd51fb489 (diff) | |
download | u-boot-03f5c55021c2d6297e66cc11bfea75f149a5d71c.zip u-boot-03f5c55021c2d6297e66cc11bfea75f149a5d71c.tar.gz u-boot-03f5c55021c2d6297e66cc11bfea75f149a5d71c.tar.bz2 |
Patches by Jon Loeliger, 24 Aug 2004:
- Add support for the MPC8541 and MPC8555 CDS boards
- Cleanup eth?addr handling: make dependent on CONFIG_ETH?ADDR
Diffstat (limited to 'board/cds/common/cadmus.c')
-rw-r--r-- | board/cds/common/cadmus.c | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/board/cds/common/cadmus.c b/board/cds/common/cadmus.c new file mode 100644 index 0000000..5f86de5 --- /dev/null +++ b/board/cds/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; +} |