diff options
Diffstat (limited to 'board/siemens/pcu_e/pcu_e.c')
| -rw-r--r-- | board/siemens/pcu_e/pcu_e.c | 562 |
1 files changed, 0 insertions, 562 deletions
diff --git a/board/siemens/pcu_e/pcu_e.c b/board/siemens/pcu_e/pcu_e.c deleted file mode 100644 index 9795284..0000000 --- a/board/siemens/pcu_e/pcu_e.c +++ /dev/null @@ -1,562 +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 <i2c.h> -#include <command.h> - -/* ------------------------------------------------------------------------- */ - -static long int dram_size (long int, long int *, long int); -static void puma_status (void); -static void puma_set_mode (int mode); -static int puma_init_done (void); -static void puma_load (ulong addr, ulong len); - -/* ------------------------------------------------------------------------- */ - -#define _NOT_USED_ 0xFFFFFFFF - -/* - * 50 MHz SDRAM access using UPM A - */ -const uint sdram_table[] = { - /* - * Single Read. (Offset 0 in UPM RAM) - */ - 0x1f0dfc04, 0xeeafbc04, 0x11af7c04, 0xefbeec00, - 0x1ffddc47, /* last */ - /* - * SDRAM Initialization (offset 5 in UPM 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. - * - */ - 0x1ffddc35, 0xefceac34, 0x1f3d5c35, /* last */ - /* - * Burst Read. (Offset 8 in UPM RAM) - */ - 0x1f0dfc04, 0xeeafbc04, 0x10af7c04, 0xf0affc00, - 0xf0affc00, 0xf1affc00, 0xefbeec00, 0x1ffddc47, /* last */ - _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, - _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, - - /* - * Single Write. (Offset 18 in UPM RAM) - */ - 0x1f0dfc04, 0xeeafac00, 0x01be4c04, 0x1ffddc47, /* last */ - _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, - /* - * Burst Write. (Offset 20 in UPM RAM) - */ - 0x1f0dfc04, 0xeeafac00, 0x10af5c00, 0xf0affc00, - 0xf0affc00, 0xe1beec04, 0x1ffddc47, /* last */ - _NOT_USED_, - _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, - _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, - /* - * Refresh (Offset 30 in UPM RAM) - */ - 0x1ffd7c84, 0xfffffc04, 0xfffffc04, 0xfffffc04, - 0xfffffc84, 0xfffffc07, /* last */ - _NOT_USED_, _NOT_USED_, - _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, - /* - * Exception. (Offset 3c in UPM RAM) - */ - 0x7ffffc07, /* last */ - _NOT_USED_, _NOT_USED_, _NOT_USED_, -}; - -/* ------------------------------------------------------------------------- */ - -/* - * PUMA access using UPM B - */ -const uint puma_table[] = { - /* - * Single Read. (Offset 0 in UPM RAM) - */ - _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, - _NOT_USED_, - /* - * Precharge and MRS - */ - _NOT_USED_, _NOT_USED_, _NOT_USED_, - /* - * Burst Read. (Offset 8 in UPM RAM) - */ - _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, - _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, - _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, - _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, - /* - * Single Write. (Offset 18 in UPM RAM) - */ - 0x0ffff804, 0x0ffff400, 0x3ffffc47, /* last */ - _NOT_USED_, - _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, - /* - * Burst Write. (Offset 20 in UPM RAM) - */ - _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, - _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, - _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, - _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, - /* - * Refresh (Offset 30 in UPM RAM) - */ - _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, - _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, - _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, - /* - * Exception. (Offset 3c in UPM RAM) - */ - 0x7ffffc07, /* last */ - _NOT_USED_, _NOT_USED_, _NOT_USED_, -}; - -/* ------------------------------------------------------------------------- */ - - -/* - * Check Board Identity: - * - */ - -int checkboard (void) -{ - puts ("Board: Siemens PCU E\n"); - return (0); -} - -/* ------------------------------------------------------------------------- */ - -phys_size_t initdram (int board_type) -{ - volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR; - volatile memctl8xx_t *memctl = &immr->im_memctl; - long int size_b0, reg; - int i; - - /* - * Configure UPMA for SDRAM - */ - upmconfig (UPMA, (uint *) sdram_table, - sizeof (sdram_table) / sizeof (uint)); - - memctl->memc_mptpr = CONFIG_SYS_MPTPR; - - /* burst length=4, burst type=sequential, CAS latency=2 */ - memctl->memc_mar = 0x00000088; - - /* - * Map controller bank 2 to the SDRAM bank at preliminary address. - */ -#if PCU_E_WITH_SWAPPED_CS /* XXX */ - memctl->memc_or5 = CONFIG_SYS_OR5_PRELIM; - memctl->memc_br5 = CONFIG_SYS_BR5_PRELIM; -#else /* XXX */ - memctl->memc_or2 = CONFIG_SYS_OR2_PRELIM; - memctl->memc_br2 = CONFIG_SYS_BR2_PRELIM; -#endif /* XXX */ - - /* initialize memory address register */ - memctl->memc_mamr = CONFIG_SYS_MAMR; /* refresh not enabled yet */ - - /* mode initialization (offset 5) */ -#if PCU_E_WITH_SWAPPED_CS /* XXX */ - udelay (200); /* 0x8000A105 */ - memctl->memc_mcr = MCR_OP_RUN | MCR_MB_CS5 | MCR_MLCF (1) | MCR_MAD (0x05); -#else /* XXX */ - udelay (200); /* 0x80004105 */ - memctl->memc_mcr = MCR_OP_RUN | MCR_MB_CS2 | MCR_MLCF (1) | MCR_MAD (0x05); -#endif /* XXX */ - - /* run 2 refresh sequence with 4-beat refresh burst (offset 0x30) */ -#if PCU_E_WITH_SWAPPED_CS /* XXX */ - udelay (1); /* 0x8000A830 */ - memctl->memc_mcr = MCR_OP_RUN | MCR_MB_CS5 | MCR_MLCF (8) | MCR_MAD (0x30); -#else /* XXX */ - udelay (1); /* 0x80004830 */ - memctl->memc_mcr = MCR_OP_RUN | MCR_MB_CS2 | MCR_MLCF (8) | MCR_MAD (0x30); -#endif /* XXX */ - -#if PCU_E_WITH_SWAPPED_CS /* XXX */ - udelay (1); /* 0x8000A106 */ - memctl->memc_mcr = MCR_OP_RUN | MCR_MB_CS5 | MCR_MLCF (1) | MCR_MAD (0x06); -#else /* XXX */ - udelay (1); /* 0x80004106 */ - memctl->memc_mcr = MCR_OP_RUN | MCR_MB_CS2 | MCR_MLCF (1) | MCR_MAD (0x06); -#endif /* XXX */ - - reg = memctl->memc_mamr; - reg &= ~MAMR_TLFA_MSK; /* switch timer loop ... */ - reg |= MAMR_TLFA_4X; /* ... to 4x */ - reg |= MAMR_PTAE; /* enable refresh */ - memctl->memc_mamr = reg; - - udelay (200); - - /* Need at least 10 DRAM accesses to stabilize */ - for (i = 0; i < 10; ++i) { -#if PCU_E_WITH_SWAPPED_CS /* XXX */ - volatile unsigned long *addr = - (volatile unsigned long *) SDRAM_BASE5_PRELIM; -#else /* XXX */ - volatile unsigned long *addr = - (volatile unsigned long *) SDRAM_BASE2_PRELIM; -#endif /* XXX */ - unsigned long val; - - val = *(addr + i); - *(addr + i) = val; - } - - /* - * Check Bank 0 Memory Size for re-configuration - */ -#if PCU_E_WITH_SWAPPED_CS /* XXX */ - size_b0 = dram_size (CONFIG_SYS_MAMR, (long *) SDRAM_BASE5_PRELIM, SDRAM_MAX_SIZE); -#else /* XXX */ - size_b0 = dram_size (CONFIG_SYS_MAMR, (long *) SDRAM_BASE2_PRELIM, SDRAM_MAX_SIZE); -#endif /* XXX */ - - memctl->memc_mamr = CONFIG_SYS_MAMR | MAMR_PTAE; - - /* - * Final mapping: - */ - -#if PCU_E_WITH_SWAPPED_CS /* XXX */ - memctl->memc_or5 = ((-size_b0) & 0xFFFF0000) | SDRAM_TIMING; - memctl->memc_br5 = (CONFIG_SYS_SDRAM_BASE & BR_BA_MSK) | BR_MS_UPMA | BR_V; -#else /* XXX */ - memctl->memc_or2 = ((-size_b0) & 0xFFFF0000) | SDRAM_TIMING; - memctl->memc_br2 = (CONFIG_SYS_SDRAM_BASE & BR_BA_MSK) | BR_MS_UPMA | BR_V; -#endif /* XXX */ - udelay (1000); - - /* - * Configure UPMB for PUMA - */ - upmconfig (UPMB, (uint *) puma_table, - sizeof (puma_table) / sizeof (uint)); - - return (size_b0); -} - -/* ------------------------------------------------------------------------- */ - -/* - * 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 *immr = (immap_t *) CONFIG_SYS_IMMR; - volatile memctl8xx_t *memctl = &immr->im_memctl; - - memctl->memc_mamr = mamr_value; - - return (get_ram_size (base, maxsize)); -} - -/* ------------------------------------------------------------------------- */ - -#if PCU_E_WITH_SWAPPED_CS /* XXX */ -#define ETH_CFG_BITS (CONFIG_SYS_PB_ETH_CFG1 | CONFIG_SYS_PB_ETH_CFG2 | CONFIG_SYS_PB_ETH_CFG3 ) -#else /* XXX */ -#define ETH_CFG_BITS (CONFIG_SYS_PB_ETH_MDDIS | CONFIG_SYS_PB_ETH_CFG1 | \ - CONFIG_SYS_PB_ETH_CFG2 | CONFIG_SYS_PB_ETH_CFG3 ) -#endif /* XXX */ - -#define ETH_ALL_BITS (ETH_CFG_BITS | CONFIG_SYS_PB_ETH_POWERDOWN | CONFIG_SYS_PB_ETH_RESET) - -void reset_phy (void) -{ - immap_t *immr = (immap_t *) CONFIG_SYS_IMMR; - ulong value; - - /* Configure all needed port pins for GPIO */ -#if PCU_E_WITH_SWAPPED_CS /* XXX */ -# 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); /* Set low */ -# endif - immr->im_ioport.iop_papar &= ~(CONFIG_SYS_PA_ETH_MDDIS); /* GPIO */ - immr->im_ioport.iop_paodr &= ~(CONFIG_SYS_PA_ETH_MDDIS); /* active output */ - immr->im_ioport.iop_padir |= CONFIG_SYS_PA_ETH_MDDIS; /* output */ -#endif /* XXX */ - 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; - value &= ~(CONFIG_SYS_PB_ETH_RESET); - - /* PHY configuration includes MDDIS and CFG1 ... CFG3 */ -#if !PCU_E_WITH_SWAPPED_CS -# ifdef CONFIG_SYS_ETH_MDDIS_VALUE - value |= CONFIG_SYS_PB_ETH_MDDIS; -# else - value &= ~(CONFIG_SYS_PB_ETH_MDDIS); -# endif -#endif -#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_cpm.cp_pbdat |= CONFIG_SYS_PB_ETH_RESET; - udelay (1000); -} - -/*----------------------------------------------------------------------- - * Board Special Commands: access functions for "PUMA" FPGA - */ -#if defined(CONFIG_CMD_BSP) - -#define PUMA_READ_MODE 0 -#define PUMA_LOAD_MODE 1 - -int do_puma (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) -{ - ulong addr, len; - - switch (argc) { - case 2: /* PUMA reset */ - if (strncmp (argv[1], "stat", 4) == 0) { /* Reset */ - puma_status (); - return 0; - } - break; - case 4: /* PUMA load addr len */ - if (strcmp (argv[1], "load") != 0) - break; - - addr = simple_strtoul (argv[2], NULL, 16); - len = simple_strtoul (argv[3], NULL, 16); - - printf ("PUMA load: addr %08lX len %ld (0x%lX): ", - addr, len, len); - puma_load (addr, len); - - return 0; - default: - break; - } - return cmd_usage(cmdtp); -} - -U_BOOT_CMD (puma, 4, 1, do_puma, - "access PUMA FPGA", - "status - print PUMA status\n" - "puma load addr len - load PUMA configuration data" -); -#endif - -/* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . */ - -static void puma_set_mode (int mode) -{ - volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR; - volatile memctl8xx_t *memctl = &immr->im_memctl; - - /* disable PUMA in memory controller */ -#if PCU_E_WITH_SWAPPED_CS /* XXX */ - memctl->memc_br3 = 0; -#else /* XXX */ - memctl->memc_br4 = 0; -#endif /* XXX */ - - switch (mode) { - case PUMA_READ_MODE: -#if PCU_E_WITH_SWAPPED_CS /* XXX */ - memctl->memc_or3 = PUMA_CONF_OR_READ; - memctl->memc_br3 = PUMA_CONF_BR_READ; -#else /* XXX */ - memctl->memc_or4 = PUMA_CONF_OR_READ; - memctl->memc_br4 = PUMA_CONF_BR_READ; -#endif /* XXX */ - break; - case PUMA_LOAD_MODE: -#if PCU_E_WITH_SWAPPED_CS /* XXX */ - memctl->memc_or3 = PUMA_CONF_OR_LOAD; - memctl->memc_br3 = PUMA_CONF_BR_LOAD; -#else /* XXX */ - memctl->memc_or4 = PUMA_CONF_OR_READ; - memctl->memc_br4 = PUMA_CONF_BR_READ; -#endif /* XXX */ - break; - } -} - -/* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . */ - -#define PUMA_INIT_TIMEOUT 1000 /* max. 1000 ms = 1 second */ - -static void puma_load (ulong addr, ulong len) -{ - volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR; - volatile uchar *fpga_addr = (volatile uchar *) PUMA_CONF_BASE; /* XXX ??? */ - uchar *data = (uchar *) addr; - int i; - - /* align length */ - if (len & 1) - ++len; - - /* Reset FPGA */ - immr->im_ioport.iop_pcpar &= ~(CONFIG_SYS_PC_PUMA_INIT); /* make input */ - immr->im_ioport.iop_pcso &= ~(CONFIG_SYS_PC_PUMA_INIT); - immr->im_ioport.iop_pcdir &= ~(CONFIG_SYS_PC_PUMA_INIT); - -#if PCU_E_WITH_SWAPPED_CS /* XXX */ - immr->im_cpm.cp_pbpar &= ~(CONFIG_SYS_PB_PUMA_PROG); /* GPIO */ - immr->im_cpm.cp_pbodr &= ~(CONFIG_SYS_PB_PUMA_PROG); /* active output */ - immr->im_cpm.cp_pbdat &= ~(CONFIG_SYS_PB_PUMA_PROG); /* Set low */ - immr->im_cpm.cp_pbdir |= CONFIG_SYS_PB_PUMA_PROG; /* output */ -#else - immr->im_ioport.iop_papar &= ~(CONFIG_SYS_PA_PUMA_PROG); /* GPIO */ - immr->im_ioport.iop_padat &= ~(CONFIG_SYS_PA_PUMA_PROG); /* Set low */ - immr->im_ioport.iop_paodr &= ~(CONFIG_SYS_PA_PUMA_PROG); /* active output */ - immr->im_ioport.iop_padir |= CONFIG_SYS_PA_PUMA_PROG; /* output */ -#endif /* XXX */ - udelay (100); - -#if PCU_E_WITH_SWAPPED_CS /* XXX */ - immr->im_cpm.cp_pbdat |= CONFIG_SYS_PB_PUMA_PROG; /* release reset */ -#else - immr->im_ioport.iop_padat |= CONFIG_SYS_PA_PUMA_PROG; /* release reset */ -#endif /* XXX */ - - /* wait until INIT indicates completion of reset */ - for (i = 0; i < PUMA_INIT_TIMEOUT; ++i) { - udelay (1000); - if (immr->im_ioport.iop_pcdat & CONFIG_SYS_PC_PUMA_INIT) - break; - } - if (i == PUMA_INIT_TIMEOUT) { - printf ("*** PUMA init timeout ***\n"); - return; - } - - puma_set_mode (PUMA_LOAD_MODE); - - while (len--) - *fpga_addr = *data++; - - puma_set_mode (PUMA_READ_MODE); - - puma_status (); -} - -/* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . */ - -static void puma_status (void) -{ - /* Check state */ - printf ("PUMA initialization is %scomplete\n", - puma_init_done ()? "" : "NOT "); -} - -/* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . */ - -static int puma_init_done (void) -{ - volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR; - - /* make sure pin is GPIO input */ - immr->im_ioport.iop_pcpar &= ~(CONFIG_SYS_PC_PUMA_DONE); - immr->im_ioport.iop_pcso &= ~(CONFIG_SYS_PC_PUMA_DONE); - immr->im_ioport.iop_pcdir &= ~(CONFIG_SYS_PC_PUMA_DONE); - - return (immr->im_ioport.iop_pcdat & CONFIG_SYS_PC_PUMA_DONE) ? 1 : 0; -} - -/* ------------------------------------------------------------------------- */ - -int misc_init_r (void) -{ - ulong addr = 0; - ulong len = 0; - char *s; - - printf ("PUMA: "); - if (puma_init_done ()) { - printf ("initialized\n"); - return 0; - } - - if ((s = getenv ("puma_addr")) != NULL) - addr = simple_strtoul (s, NULL, 16); - - if ((s = getenv ("puma_len")) != NULL) - len = simple_strtoul (s, NULL, 16); - - if ((!addr) || (!len)) { - printf ("net list undefined\n"); - return 0; - } - - printf ("loading... "); - - puma_load (addr, len); - return (0); -} - -/* ------------------------------------------------------------------------- */ |