diff options
Diffstat (limited to 'board/netstal/hcu4/hcu4.c')
| -rw-r--r-- | board/netstal/hcu4/hcu4.c | 80 |
1 files changed, 36 insertions, 44 deletions
diff --git a/board/netstal/hcu4/hcu4.c b/board/netstal/hcu4/hcu4.c index 4fbe701..bb610e2 100644 --- a/board/netstal/hcu4/hcu4.c +++ b/board/netstal/hcu4/hcu4.c @@ -1,5 +1,5 @@ /* - *(C) Copyright 2005-2007 Netstal Maschinen AG + *(C) Copyright 2005-2008 Netstal Maschinen AG * Niklaus Giger (Niklaus.Giger@netstal.com) * * This source code is free software; you can redistribute it @@ -28,17 +28,10 @@ DECLARE_GLOBAL_DATA_PTR; #define HCU_MACH_VERSIONS_REGISTER (0x7C000000 + 0xF00000) -#define SYS_SLOT_ADDRESS (0x7C000000 + 0x400000) -#define HCU3_DIGITAL_IO_REGISTER (0x7C000000 + 0x500000) +#define HCU_SLOT_ADDRESS (0x7C000000 + 0x400000) +#define HCU_DIGITAL_IO_REGISTER (0x7C000000 + 0x500000) #define HCU_SW_INSTALL_REQUESTED 0x10 -#undef DEBUG - -#if defined(DEBUG) -void show_sdram_registers(void); -#endif -long int fixed_hcu4_sdram (unsigned int dram_size); - /* * This function is run very early, out of flash, and before devices are * initialized. It is called by lib_ppc/board.c:board_init_f by virtue @@ -49,17 +42,12 @@ long int fixed_hcu4_sdram (unsigned int dram_size); * anything, not even stack. So be careful. */ -#define CPC0_CR0 0xb1 /* Chip control register 0 */ -#define CPC0_CR1 0xb2 /* Chip control register 1 */ /* Attention: If you want 1 microsecs times from the external oscillator - * use 0x00804051. But this causes problems with u-boot and linux! + * 0x00004051 is okay for u-boot/linux, but different from old vxworks values + * 0x00804051 causes problems with u-boot and linux! */ #define CPC0_CR0_VALUE 0x0030103c #define CPC0_CR1_VALUE 0x00004051 -#define CPC0_ECR 0xaa /* Edge condition register */ -#define EBC0_CFG 0x23 /* External Peripheral Control Register */ -#define CPC0_EIRR 0xb6 /* External Interrupt Register */ - int board_early_init_f (void) { @@ -70,16 +58,16 @@ int board_early_init_f (void) * IRQ 17-24 RESERVED/UNUSED * IRQ 31 (EXT IRQ 6) (unused) */ - mtdcr (uicsr, 0xFFFFFFFF); /* clear all ints */ - mtdcr (uicer, 0x00000000); /* disable all ints */ - mtdcr (uiccr, 0x00000000); /* set all to be non-critical */ - mtdcr (uicpr, 0xFFFFE000); /* set int polarities */ - mtdcr (uictr, 0x00000000); /* set int trigger levels */ - mtdcr (uicsr, 0xFFFFFFFF); /* clear all ints */ + mtdcr(uicsr, 0xFFFFFFFF); /* clear all ints */ + mtdcr(uicer, 0x00000000); /* disable all ints */ + mtdcr(uiccr, 0x00000000); /* set all to be non-critical */ + mtdcr(uicpr, 0xFFFFE000); /* set int polarities */ + mtdcr(uictr, 0x00000000); /* set int trigger levels */ + mtdcr(uicsr, 0xFFFFFFFF); /* clear all ints */ - mtdcr(CPC0_CR1, CPC0_CR1_VALUE); - mtdcr(CPC0_ECR, 0x60606000); - mtdcr(CPC0_EIRR, 0x7c000000); + mtdcr(CPC0_CR1, CPC0_CR1_VALUE); + mtdcr(CPC0_ECR, 0x60606000); + mtdcr(CPC0_EIRR, 0x7C000000); return 0; } @@ -93,18 +81,19 @@ int board_pre_init (void) int sys_install_requested(void) { - u16 *ioValuePtr = (u16 *)HCU3_DIGITAL_IO_REGISTER; - return (in_be16(ioValuePtr) & HCU_SW_INSTALL_REQUESTED) != 0; + u16 ioValue = in_be16((u16 *)HCU_DIGITAL_IO_REGISTER); + return (ioValue & HCU_SW_INSTALL_REQUESTED) != 0; } int checkboard (void) { - u16 *boardVersReg = (u16 *)HCU_MACH_VERSIONS_REGISTER; - u16 generation = in_be16(boardVersReg) & 0xf0; - u16 index = in_be16(boardVersReg) & 0x0f; + u16 boardVersReg = in_be16((u16 *)HCU_MACH_VERSIONS_REGISTER); + u16 generation = boardVersReg & 0xf0; + u16 index = boardVersReg & 0x0f; + + /* Cannot be done in board_early_init */ + mtdcr(cntrl0, CPC0_CR0_VALUE); - /* Cannot be done, in board_early_init */ - mtdcr(CPC0_CR0, CPC0_CR0_VALUE); /* Force /RTS to active. The board it not wired quite * correctly to use cts/rtc flow control, so just force the * /RST active and forget about it. @@ -145,8 +134,8 @@ void sdram_init(void) */ u32 hcu_get_slot(void) { - u16 *slot = (u16 *)SYS_SLOT_ADDRESS; - return in_be16(slot) & 0x7f; + u16 slot = in_be16((u16 *)HCU_SLOT_ADDRESS); + return slot & 0x7f; } /* @@ -154,12 +143,12 @@ u32 hcu_get_slot(void) */ u32 get_serial_number(void) { - u32 *serial = (u32 *)CFG_FLASH_BASE; + u32 serial = in_be32((u32 *)CFG_FLASH_BASE); - if (in_be32(serial) == 0xffffffff) + if (serial == 0xffffffff) return 0; - return in_be32(serial); + return serial; } @@ -177,12 +166,15 @@ int misc_init_r(void) long int initdram(int board_type) { long dram_size = 0; - u16 *boardVersReg = (u16 *) HCU_MACH_VERSIONS_REGISTER; - u16 generation = in_be16(boardVersReg) & 0xf0; - if (generation == HW_GENERATION_HCU3) - dram_size = 32*1024*1024; - else dram_size = 64*1024*1024; - fixed_hcu4_sdram(dram_size); + u16 boardVersReg = in_be16((u16 *)HCU_MACH_VERSIONS_REGISTER); + u16 generation = boardVersReg & 0xf0; + u16 index = boardVersReg & 0x0f; + + if (generation == HW_GENERATION_HCU3 && index < 0xf) + dram_size = 32 << 20; /* 32 MB - RAM */ + else + dram_size = 64 << 20; /* 64 MB - RAM */ + init_ppc405_sdram(dram_size); #ifdef DEBUG show_sdram_registers(); |