diff options
Diffstat (limited to 'board/siemens/CCM/ccm.c')
| -rw-r--r-- | board/siemens/CCM/ccm.c | 408 |
1 files changed, 0 insertions, 408 deletions
diff --git a/board/siemens/CCM/ccm.c b/board/siemens/CCM/ccm.c deleted file mode 100644 index e91ceb0..0000000 --- a/board/siemens/CCM/ccm.c +++ /dev/null @@ -1,408 +0,0 @@ -/* - * (C) Copyright 2001 - * Wolfgang Denk, DENX Software Engineering, wd@denx.de. - * - * 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> -#include <mpc8xx.h> -#include <commproc.h> -#include <command.h> - -/* ------------------------------------------------------------------------- */ - -static long int dram_size (long int, long int *, long int); -void can_driver_enable (void); -void can_driver_disable (void); - -int fpga_init(void); - -/* ------------------------------------------------------------------------- */ - -#define _NOT_USED_ 0xFFFFFFFF - -const uint sdram_table[] = -{ - /* - * Single Read. (Offset 0 in UPMA RAM) - */ - 0x1F0DFC04, 0xEEAFBC04, 0x11AF7C04, 0xEFBAFC00, - 0x1FF5FC47, /* last */ - /* - * SDRAM Initialization (offset 5 in UPMA RAM) - * - * This is no UPM entry point. The following definition uses - * the remaining space to establish an initialization - * sequence, which is executed by a RUN command. - * - */ - 0x1FF5FC34, 0xEFEABC34, 0x1FB57C35, /* last */ - /* - * Burst Read. (Offset 8 in UPMA RAM) - */ - 0x1F0DFC04, 0xEEAFBC04, 0x10AF7C04, 0xF0AFFC00, - 0xF0AFFC00, 0xF1AFFC00, 0xEFBAFC00, 0x1FF5FC47, /* last */ - _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, - _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, - /* - * Single Write. (Offset 18 in UPMA RAM) - */ - 0x1F0DFC04, 0xEEABBC00, 0x01B27C04, 0x1FF5FC47, /* last */ - _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, - /* - * Burst Write. (Offset 20 in UPMA RAM) - */ - 0x1F0DFC04, 0xEEABBC00, 0x10A77C00, 0xF0AFFC00, - 0xF0AFFC00, 0xE1BAFC04, 0x1FF5FC47, /* last */ - _NOT_USED_, - _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, - _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, - /* - * Refresh (Offset 30 in UPMA RAM) - */ - 0x1FFD7C84, 0xFFFFFC04, 0xFFFFFC04, 0xFFFFFC04, - 0xFFFFFC84, 0xFFFFFC07, /* last */ - _NOT_USED_, _NOT_USED_, - _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, - /* - * Exception. (Offset 3c in UPMA RAM) - */ - 0x7FFFFC07, /* last */ - _NOT_USED_, _NOT_USED_, _NOT_USED_, -}; - -/* ------------------------------------------------------------------------- */ - - -/* - * Check Board Identity: - * - * Always return 1 (no second DRAM bank since based on TQM8xxL module) - */ - -int checkboard (void) -{ - unsigned char *s; - unsigned char buf[64]; - - s = (getenv_f("serial#", (char *)&buf, sizeof(buf)) > 0) ? buf : NULL; - - puts ("Board: Siemens CCM"); - - if (s) { - puts (" ("); - - for (; *s; ++s) { - if (*s == ' ') - break; - putc (*s); - } - putc (')'); - } - - putc ('\n'); - - return (0); -} - -/* ------------------------------------------------------------------------- */ - -/* - * If Power-On-Reset switch off the Red and Green LED: At reset, the - * data direction registers are cleared and must therefore be restored. - */ -#define RSR_CSRS 0x08000000 - -int power_on_reset(void) -{ - /* Test Reset Status Register */ - return ((volatile immap_t *)CONFIG_SYS_IMMR)->im_clkrst.car_rsr & RSR_CSRS ? 0:1; -} - -#define PB_LED_GREEN 0x10000 /* red LED is on PB.15 */ -#define PB_LED_RED 0x20000 /* red LED is on PB.14 */ -#define PB_LEDS (PB_LED_GREEN | PB_LED_RED); - -static void init_leds (void) -{ - volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR; - - immap->im_cpm.cp_pbpar &= ~PB_LEDS; - immap->im_cpm.cp_pbodr &= ~PB_LEDS; - immap->im_cpm.cp_pbdir |= PB_LEDS; - /* Check stop reset status */ - if (power_on_reset()) { - immap->im_cpm.cp_pbdat &= ~PB_LEDS; - } -} - -/* ------------------------------------------------------------------------- */ - -phys_size_t initdram (int board_type) -{ - volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR; - volatile memctl8xx_t *memctl = &immap->im_memctl; - long int size8, size9; - long int size = 0; - unsigned long reg; - - upmconfig(UPMA, (uint *)sdram_table, sizeof(sdram_table)/sizeof(uint)); - - /* - * Preliminary prescaler for refresh (depends on number of - * banks): This value is selected for four cycles every 62.4 us - * with two SDRAM banks or four cycles every 31.2 us with one - * bank. It will be adjusted after memory sizing. - */ - memctl->memc_mptpr = CONFIG_SYS_MPTPR_2BK_8K; - - memctl->memc_mar = 0x00000088; - - /* - * Map controller banks 2 and 3 to the SDRAM banks 2 and 3 at - * preliminary addresses - these have to be modified after the - * SDRAM size has been determined. - */ - memctl->memc_or2 = CONFIG_SYS_OR2_PRELIM; - memctl->memc_br2 = CONFIG_SYS_BR2_PRELIM; - - memctl->memc_mamr = CONFIG_SYS_MAMR_8COL & (~(MAMR_PTAE)); /* no refresh yet */ - - udelay(200); - - /* perform SDRAM initializsation sequence */ - - memctl->memc_mcr = 0x80004105; /* SDRAM bank 0 */ - udelay(1); - memctl->memc_mcr = 0x80004230; /* SDRAM bank 0 - execute twice */ - udelay(1); - - memctl->memc_mamr |= MAMR_PTAE; /* enable refresh */ - - udelay (1000); - - /* - * Check Bank 0 Memory Size for re-configuration - * - * try 8 column mode - */ - size8 = dram_size (CONFIG_SYS_MAMR_8COL, SDRAM_BASE2_PRELIM, SDRAM_MAX_SIZE); - - udelay (1000); - - /* - * try 9 column mode - */ - size9 = dram_size (CONFIG_SYS_MAMR_9COL, SDRAM_BASE2_PRELIM, SDRAM_MAX_SIZE); - - if (size8 < size9) { /* leave configuration at 9 columns */ - size = size9; -/* debug ("SDRAM in 9 column mode: %ld MB\n", size >> 20); */ - } else { /* back to 8 columns */ - size = size8; - memctl->memc_mamr = CONFIG_SYS_MAMR_8COL; - udelay(500); -/* debug ("SDRAM in 8 column mode: %ld MB\n", size >> 20); */ - } - - udelay (1000); - - /* - * Adjust refresh rate depending on SDRAM type - * For types > 128 MBit leave it at the current (fast) rate - */ - if (size < 0x02000000) { - /* reduce to 15.6 us (62.4 us / quad) */ - memctl->memc_mptpr = CONFIG_SYS_MPTPR_2BK_4K; - udelay(1000); - } - - /* - * Final mapping - */ - - memctl->memc_or2 = ((-size) & 0xFFFF0000) | CONFIG_SYS_OR_TIMING_SDRAM; - memctl->memc_br2 = (CONFIG_SYS_SDRAM_BASE & BR_BA_MSK) | BR_MS_UPMA | BR_V; - - - /* adjust refresh rate depending on SDRAM type, one bank */ - reg = memctl->memc_mptpr; - reg >>= 1; /* reduce to CONFIG_SYS_MPTPR_1BK_8K / _4K */ - memctl->memc_mptpr = reg; - - can_driver_enable (); - init_leds (); - - udelay(10000); - - return (size); -} - -/* ------------------------------------------------------------------------- */ - -/* - * Warning - both the PUMA load mode and the CAN driver use UPM B, - * so make sure only one of both is active. - */ -void can_driver_enable (void) -{ - volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR; - volatile memctl8xx_t *memctl = &immap->im_memctl; - - /* Initialize MBMR */ - memctl->memc_mbmr = MBMR_GPL_B4DIS; /* GPL_B4 ouput line Disable */ - - /* Initialize UPMB for CAN: single read */ - memctl->memc_mdr = 0xFFFFC004; - memctl->memc_mcr = 0x0100 | UPMB; - - memctl->memc_mdr = 0x0FFFD004; - memctl->memc_mcr = 0x0101 | UPMB; - - memctl->memc_mdr = 0x0FFFC000; - memctl->memc_mcr = 0x0102 | UPMB; - - memctl->memc_mdr = 0x3FFFC004; - memctl->memc_mcr = 0x0103 | UPMB; - - memctl->memc_mdr = 0xFFFFDC05; - memctl->memc_mcr = 0x0104 | UPMB; - - /* Initialize UPMB for CAN: single write */ - memctl->memc_mdr = 0xFFFCC004; - memctl->memc_mcr = 0x0118 | UPMB; - - memctl->memc_mdr = 0xCFFCD004; - memctl->memc_mcr = 0x0119 | UPMB; - - memctl->memc_mdr = 0x0FFCC000; - memctl->memc_mcr = 0x011A | UPMB; - - memctl->memc_mdr = 0x7FFCC004; - memctl->memc_mcr = 0x011B | UPMB; - - memctl->memc_mdr = 0xFFFDCC05; - memctl->memc_mcr = 0x011C | UPMB; - - /* Initialize OR3 / BR3 for CAN Bus Controller */ - memctl->memc_or3 = CONFIG_SYS_OR3_CAN; - memctl->memc_br3 = CONFIG_SYS_BR3_CAN; -} - -void can_driver_disable (void) -{ - volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR; - volatile memctl8xx_t *memctl = &immap->im_memctl; - - /* Reset OR3 / BR3 to disable CAN Bus Controller */ - memctl->memc_br3 = 0; - memctl->memc_or3 = 0; - - memctl->memc_mbmr = 0; -} - - -/* ------------------------------------------------------------------------- */ - -/* - * Check memory range for valid RAM. A simple memory test determines - * the actually available RAM size between addresses `base' and - * `base + maxsize'. Some (not all) hardware errors are detected: - * - short between address lines - * - short between data lines - */ - -static long int dram_size (long int mamr_value, long int *base, long int maxsize) -{ - volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR; - volatile memctl8xx_t *memctl = &immap->im_memctl; - - memctl->memc_mamr = mamr_value; - - return (get_ram_size(base, maxsize)); -} - -/* ------------------------------------------------------------------------- */ - -#define ETH_CFG_BITS (CONFIG_SYS_PB_ETH_CFG1 | CONFIG_SYS_PB_ETH_CFG2 | CONFIG_SYS_PB_ETH_CFG3 ) - -#define ETH_ALL_BITS (ETH_CFG_BITS | CONFIG_SYS_PB_ETH_POWERDOWN) - -void reset_phy(void) -{ - immap_t *immr = (immap_t *)CONFIG_SYS_IMMR; - ulong value; - - /* Configure all needed port pins for GPIO */ -#ifdef CONFIG_SYS_ETH_MDDIS_VALUE - immr->im_ioport.iop_padat |= CONFIG_SYS_PA_ETH_MDDIS; -#else - immr->im_ioport.iop_padat &= ~(CONFIG_SYS_PA_ETH_MDDIS | CONFIG_SYS_PA_ETH_RESET); /* Set low */ -#endif - immr->im_ioport.iop_papar &= ~(CONFIG_SYS_PA_ETH_MDDIS | CONFIG_SYS_PA_ETH_RESET); /* GPIO */ - immr->im_ioport.iop_paodr &= ~(CONFIG_SYS_PA_ETH_MDDIS | CONFIG_SYS_PA_ETH_RESET); /* active output */ - immr->im_ioport.iop_padir |= CONFIG_SYS_PA_ETH_MDDIS | CONFIG_SYS_PA_ETH_RESET; /* output */ - - immr->im_cpm.cp_pbpar &= ~(ETH_ALL_BITS); /* GPIO */ - immr->im_cpm.cp_pbodr &= ~(ETH_ALL_BITS); /* active output */ - - value = immr->im_cpm.cp_pbdat; - - /* Assert Powerdown and Reset signals */ - value |= CONFIG_SYS_PB_ETH_POWERDOWN; - - /* PHY configuration includes MDDIS and CFG1 ... CFG3 */ -#ifdef CONFIG_SYS_ETH_CFG1_VALUE - value |= CONFIG_SYS_PB_ETH_CFG1; -#else - value &= ~(CONFIG_SYS_PB_ETH_CFG1); -#endif -#ifdef CONFIG_SYS_ETH_CFG2_VALUE - value |= CONFIG_SYS_PB_ETH_CFG2; -#else - value &= ~(CONFIG_SYS_PB_ETH_CFG2); -#endif -#ifdef CONFIG_SYS_ETH_CFG3_VALUE - value |= CONFIG_SYS_PB_ETH_CFG3; -#else - value &= ~(CONFIG_SYS_PB_ETH_CFG3); -#endif - - /* Drive output signals to initial state */ - immr->im_cpm.cp_pbdat = value; - immr->im_cpm.cp_pbdir |= ETH_ALL_BITS; - udelay (10000); - - /* De-assert Ethernet Powerdown */ - immr->im_cpm.cp_pbdat &= ~(CONFIG_SYS_PB_ETH_POWERDOWN); /* Enable PHY power */ - udelay (10000); - - /* de-assert RESET signal of PHY */ - immr->im_ioport.iop_padat |= CONFIG_SYS_PA_ETH_RESET; - udelay (1000); -} - - -int misc_init_r (void) -{ - fpga_init(); - return (0); -} -/* ------------------------------------------------------------------------- */ |