/* * (C) Copyright 2006-2007 * Stefan Roese, DENX Software Engineering, sr@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 <ppc4xx.h> #include <asm/processor.h> #include <asm/io.h> #include <spd_sdram.h> DECLARE_GLOBAL_DATA_PTR; extern flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */ int board_early_init_f(void) { register uint reg; /*-------------------------------------------------------------------- * Setup the external bus controller/chip selects *-------------------------------------------------------------------*/ mtdcr(ebccfga, xbcfg); reg = mfdcr(ebccfgd); mtdcr(ebccfgd, reg | 0x04000000); /* Set ATC */ /*-------------------------------------------------------------------- * Setup the GPIO pins *-------------------------------------------------------------------*/ /*CPLD cs */ /*setup Address lines for flash size 64Meg. */ out32(GPIO0_OSRL, in32(GPIO0_OSRL) | 0x50010000); out32(GPIO0_TSRL, in32(GPIO0_TSRL) | 0x50010000); out32(GPIO0_ISR1L, in32(GPIO0_ISR1L) | 0x50000000); /*setup emac */ out32(GPIO0_TCR, in32(GPIO0_TCR) | 0xC080); out32(GPIO0_TSRL, in32(GPIO0_TSRL) | 0x40); out32(GPIO0_ISR1L, in32(GPIO0_ISR1L) | 0x55); out32(GPIO0_OSRH, in32(GPIO0_OSRH) | 0x50004000); out32(GPIO0_ISR1H, in32(GPIO0_ISR1H) | 0x00440000); /*UART1 */ out32(GPIO1_TCR, in32(GPIO1_TCR) | 0x02000000); out32(GPIO1_OSRL, in32(GPIO1_OSRL) | 0x00080000); out32(GPIO1_ISR2L, in32(GPIO1_ISR2L) | 0x00010000); /* external interrupts IRQ0...3 */ out32(GPIO1_TCR, in32(GPIO1_TCR) & ~0x00f00000); out32(GPIO1_TSRL, in32(GPIO1_TSRL) & ~0x0000ff00); out32(GPIO1_ISR1L, in32(GPIO1_ISR1L) | 0x00005500); #ifdef CONFIG_440EP /*setup USB 2.0 */ out32(GPIO1_TCR, in32(GPIO1_TCR) | 0xc0000000); out32(GPIO1_OSRL, in32(GPIO1_OSRL) | 0x50000000); out32(GPIO0_TCR, in32(GPIO0_TCR) | 0xf); out32(GPIO0_OSRH, in32(GPIO0_OSRH) | 0xaa); out32(GPIO0_ISR2H, in32(GPIO0_ISR2H) | 0x00000500); #endif /*-------------------------------------------------------------------- * Setup the interrupt controller polarities, triggers, etc. *-------------------------------------------------------------------*/ mtdcr(uic0sr, 0xffffffff); /* clear all */ mtdcr(uic0er, 0x00000000); /* disable all */ mtdcr(uic0cr, 0x00000009); /* ATI & UIC1 crit are critical */ mtdcr(uic0pr, 0xfffffe13); /* per ref-board manual */ mtdcr(uic0tr, 0x01c00008); /* per ref-board manual */ mtdcr(uic0vr, 0x00000001); /* int31 highest, base=0x000 */ mtdcr(uic0sr, 0xffffffff); /* clear all */ mtdcr(uic1sr, 0xffffffff); /* clear all */ mtdcr(uic1er, 0x00000000); /* disable all */ mtdcr(uic1cr, 0x00000000); /* all non-critical */ mtdcr(uic1pr, 0xffffe0ff); /* per ref-board manual */ mtdcr(uic1tr, 0x00ffc000); /* per ref-board manual */ mtdcr(uic1vr, 0x00000001); /* int31 highest, base=0x000 */ mtdcr(uic1sr, 0xffffffff); /* clear all */ /*-------------------------------------------------------------------- * Setup other serial configuration *-------------------------------------------------------------------*/ mfsdr(sdr_pci0, reg); mtsdr(sdr_pci0, 0x80000000 | reg); /* PCI arbiter enabled */ mtsdr(sdr_pfc0, 0x00003e00); /* Pin function */ mtsdr(sdr_pfc1, 0x00048000); /* Pin function: UART0 has 4 pins */ /*clear tmrclk divisor */ *(unsigned char *)(CFG_BCSR_BASE | 0x04) = 0x00; /*enable ethernet */ *(unsigned char *)(CFG_BCSR_BASE | 0x08) = 0xf0; #ifdef CONFIG_440EP /*enable usb 1.1 fs device and remove usb 2.0 reset */ *(unsigned char *)(CFG_BCSR_BASE | 0x09) = 0x00; #endif /*get rid of flash write protect */ *(unsigned char *)(CFG_BCSR_BASE | 0x07) = 0x00; return 0; } int misc_init_r (void) { uint pbcr; int size_val = 0; /* Re-do sizing to get full correct info */ mtdcr(ebccfga, pb0cr); pbcr = mfdcr(ebccfgd); switch (gd->bd->bi_flashsize) { case 1 << 20: size_val = 0; break; case 2 << 20: size_val = 1; break; case 4 << 20: size_val = 2; break; case 8 << 20: size_val = 3; break; case 16 << 20: size_val = 4; break; case 32 << 20: size_val = 5; break; case 64 << 20: size_val = 6; break; case 128 << 20: size_val = 7; break; } pbcr = (pbcr & 0x0001ffff) | gd->bd->bi_flashstart | (size_val << 17); mtdcr(ebccfga, pb0cr); mtdcr(ebccfgd, pbcr); /* adjust flash start and offset */ gd->bd->bi_flashstart = 0 - gd->bd->bi_flashsize; gd->bd->bi_flashoffset = 0; /* Monitor protection ON by default */ (void)flash_protect(FLAG_PROTECT_SET, -CFG_MONITOR_LEN, 0xffffffff, &flash_info[0]); return 0; } int checkboard(void) { char *s = getenv("serial#"); u8 rev; u8 val; #ifdef CONFIG_440EP printf("Board: Yosemite - AMCC PPC440EP Evaluation Board"); #else printf("Board: Yellowstone - AMCC PPC440GR Evaluation Board"); #endif rev = in_8((void *)(CFG_BCSR_BASE + 0)); val = in_8((void *)(CFG_BCSR_BASE + 5)) & CFG_BCSR5_PCI66EN; printf(", Rev. %X, PCI=%d MHz", rev, val ? 66 : 33); if (s != NULL) { puts(", serial# "); puts(s); } putc('\n'); return (0); } /************************************************************************* * sdram_init -- doesn't use serial presence detect. * * Assumes: 256 MB, ECC, non-registered * PLB @ 133 MHz * ************************************************************************/ #define NUM_TRIES 64 #define NUM_READS 10 void sdram_tr1_set(int ram_address, int* tr1_value) { int i; int j, k; volatile unsigned int* ram_pointer = (unsigned int*)ram_address; int first_good = -1, last_bad = 0x1ff; unsigned long test[NUM_TRIES] = { 0x00000000, 0x00000000, 0xFFFFFFFF, 0xFFFFFFFF, 0x00000000, 0x00000000, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0x00000000, 0x00000000, 0xFFFFFFFF, 0xFFFFFFFF, 0x00000000, 0x00000000, 0xAAAAAAAA, 0xAAAAAAAA, 0x55555555, 0x55555555, 0xAAAAAAAA, 0xAAAAAAAA, 0x55555555, 0x55555555, 0x55555555, 0x55555555, 0xAAAAAAAA, 0xAAAAAAAA, 0x55555555, 0x55555555, 0xAAAAAAAA, 0xAAAAAAAA, 0xA5A5A5A5, 0xA5A5A5A5, 0x5A5A5A5A, 0x5A5A5A5A, 0xA5A5A5A5, 0xA5A5A5A5, 0x5A5A5A5A, 0x5A5A5A5A, 0x5A5A5A5A, 0x5A5A5A5A, 0xA5A5A5A5, 0xA5A5A5A5, 0x5A5A5A5A, 0x5A5A5A5A, 0xA5A5A5A5, 0xA5A5A5A5, 0xAA55AA55, 0xAA55AA55, 0x55AA55AA, 0x55AA55AA, 0xAA55AA55, 0xAA55AA55, 0x55AA55AA, 0x55AA55AA, 0x55AA55AA, 0x55AA55AA, 0xAA55AA55, 0xAA55AA55, 0x55AA55AA, 0x55AA55AA, 0xAA55AA55, 0xAA55AA55 }; /* go through all possible SDRAM0_TR1[RDCT] values */ for (i=0; i<=0x1ff; i++) { /* set the current value for TR1 */ mtsdram(mem_tr1, (0x80800800 | i)); /* write values */ for (j=0; j<NUM_TRIES; j++) { ram_pointer[j] = test[j]; /* clear any cache at ram location */ __asm__("dcbf 0,%0": :"r" (&ram_pointer[j])); } /* read values back */ for (j=0; j<NUM_TRIES; j++) { for (k=0; k<NUM_READS; k++) { /* clear any cache at ram location */ __asm__("dcbf 0,%0": :"r" (&ram_pointer[j])); if (ram_pointer[j] != test[j]) break; } /* read error */ if (k != NUM_READS) { break; } } /* we have a SDRAM0_TR1[RDCT] that is part of the window */ if (j == NUM_TRIES) { if (first_good == -1) first_good = i; /* found beginning of window */ } else { /* bad read */ /* if we have not had a good read then don't care */ if(first_good != -1) { /* first failure after a good read */ last_bad = i-1; break; } } } /* return the current value for TR1 */ *tr1_value = (first_good + last_bad) / 2; } void sdram_init(void) { register uint reg; int tr1_bank1, tr1_bank2; /*-------------------------------------------------------------------- * Setup some default *------------------------------------------------------------------*/ mtsdram(mem_uabba, 0x00000000); /* ubba=0 (default) */ mtsdram(mem_slio, 0x00000000); /* rdre=0 wrre=0 rarw=0 */ mtsdram(mem_devopt, 0x00000000); /* dll=0 ds=0 (normal) */ mtsdram(mem_clktr, 0x40000000); /* ?? */ mtsdram(mem_wddctr, 0x40000000); /* ?? */ /*clear this first, if the DDR is enabled by a debugger then you can not make changes. */ mtsdram(mem_cfg0, 0x00000000); /* Disable EEC */ /*-------------------------------------------------------------------- * Setup for board-specific specific mem *------------------------------------------------------------------*/ /* * Following for CAS Latency = 2.5 @ 133 MHz PLB */ mtsdram(mem_b0cr, 0x000a4001); /* SDBA=0x000 128MB, Mode 3, enabled */ mtsdram(mem_b1cr, 0x080a4001); /* SDBA=0x080 128MB, Mode 3, enabled */ mtsdram(mem_tr0, 0x410a4012); /* ?? */ mtsdram(mem_rtr, 0x04080000); /* ?? */ mtsdram(mem_cfg1, 0x00000000); /* Self-refresh exit, disable PM */ mtsdram(mem_cfg0, 0x30000000); /* Disable EEC */ udelay(400); /* Delay 200 usecs (min) */ /*-------------------------------------------------------------------- * Enable the controller, then wait for DCEN to complete *------------------------------------------------------------------*/ mtsdram(mem_cfg0, 0x80000000); /* Enable */ for (;;) { mfsdram(mem_mcsts, reg); if (reg & 0x80000000) break; } sdram_tr1_set(0x00000000, &tr1_bank1); sdram_tr1_set(0x08000000, &tr1_bank2); mtsdram(mem_tr1, (((tr1_bank1+tr1_bank2)/2) | 0x80800800) ); } /************************************************************************* * long int initdram * ************************************************************************/ long int initdram(int board) { sdram_init(); return CFG_SDRAM_BANKS * (CFG_KBYTES_SDRAM * 1024); /* return bytes */ } #if defined(CFG_DRAM_TEST) int testdram(void) { unsigned long *mem = (unsigned long *)0; const unsigned long kend = (1024 / sizeof(unsigned long)); unsigned long k, n; mtmsr(0); for (k = 0; k < CFG_KBYTES_SDRAM; ++k, mem += (1024 / sizeof(unsigned long))) { if ((k & 1023) == 0) { printf("%3d MB\r", k / 1024); } memset(mem, 0xaaaaaaaa, 1024); for (n = 0; n < kend; ++n) { if (mem[n] != 0xaaaaaaaa) { printf("SDRAM test fails at: %08x\n", (uint) & mem[n]); return 1; } } memset(mem, 0x55555555, 1024); for (n = 0; n < kend; ++n) { if (mem[n] != 0x55555555) { printf("SDRAM test fails at: %08x\n", (uint) & mem[n]); return 1; } } } printf("SDRAM test passes\n"); return 0; } #endif /************************************************************************* * pci_pre_init * * This routine is called just prior to registering the hose and gives * the board the opportunity to check things. Returning a value of zero * indicates that things are bad & PCI initialization should be aborted. * * Different boards may wish to customize the pci controller structure * (add regions, override default access routines, etc) or perform * certain pre-initialization actions. * ************************************************************************/ #if defined(CONFIG_PCI) int pci_pre_init(struct pci_controller *hose) { unsigned long addr; /*-------------------------------------------------------------------------+ | Set priority for all PLB3 devices to 0. | Set PLB3 arbiter to fair mode. +-------------------------------------------------------------------------*/ mfsdr(sdr_amp1, addr); mtsdr(sdr_amp1, (addr & 0x000000FF) | 0x0000FF00); addr = mfdcr(plb3_acr); mtdcr(plb3_acr, addr | 0x80000000); /*-------------------------------------------------------------------------+ | Set priority for all PLB4 devices to 0. +-------------------------------------------------------------------------*/ mfsdr(sdr_amp0, addr); mtsdr(sdr_amp0, (addr & 0x000000FF) | 0x0000FF00); addr = mfdcr(plb4_acr) | 0xa0000000; /* Was 0x8---- */ mtdcr(plb4_acr, addr); /*-------------------------------------------------------------------------+ | Set Nebula PLB4 arbiter to fair mode. +-------------------------------------------------------------------------*/ /* Segment0 */ addr = (mfdcr(plb0_acr) & ~plb0_acr_ppm_mask) | plb0_acr_ppm_fair; addr = (addr & ~plb0_acr_hbu_mask) | plb0_acr_hbu_enabled; addr = (addr & ~plb0_acr_rdp_mask) | plb0_acr_rdp_4deep; addr = (addr & ~plb0_acr_wrp_mask) | plb0_acr_wrp_2deep; mtdcr(plb0_acr, addr); /* Segment1 */ addr = (mfdcr(plb1_acr) & ~plb1_acr_ppm_mask) | plb1_acr_ppm_fair; addr = (addr & ~plb1_acr_hbu_mask) | plb1_acr_hbu_enabled; addr = (addr & ~plb1_acr_rdp_mask) | plb1_acr_rdp_4deep; addr = (addr & ~plb1_acr_wrp_mask) | plb1_acr_wrp_2deep; mtdcr(plb1_acr, addr); return 1; } #endif /* defined(CONFIG_PCI) */ /************************************************************************* * pci_target_init * * The bootstrap configuration provides default settings for the pci * inbound map (PIM). But the bootstrap config choices are limited and * may not be sufficient for a given board. * ************************************************************************/ #if defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT) void pci_target_init(struct pci_controller *hose) { /*--------------------------------------------------------------------------+ * Set up Direct MMIO registers *--------------------------------------------------------------------------*/ /*--------------------------------------------------------------------------+ | PowerPC440 EP PCI Master configuration. | Map one 1Gig range of PLB/processor addresses to PCI memory space. | PLB address 0xA0000000-0xDFFFFFFF ==> PCI address 0xA0000000-0xDFFFFFFF | Use byte reversed out routines to handle endianess. | Make this region non-prefetchable. +--------------------------------------------------------------------------*/ out32r(PCIX0_PMM0MA, 0x00000000); /* PMM0 Mask/Attribute - disabled b4 setting */ out32r(PCIX0_PMM0LA, CFG_PCI_MEMBASE); /* PMM0 Local Address */ out32r(PCIX0_PMM0PCILA, CFG_PCI_MEMBASE); /* PMM0 PCI Low Address */ out32r(PCIX0_PMM0PCIHA, 0x00000000); /* PMM0 PCI High Address */ out32r(PCIX0_PMM0MA, 0xE0000001); /* 512M + No prefetching, and enable region */ out32r(PCIX0_PMM1MA, 0x00000000); /* PMM0 Mask/Attribute - disabled b4 setting */ out32r(PCIX0_PMM1LA, CFG_PCI_MEMBASE2); /* PMM0 Local Address */ out32r(PCIX0_PMM1PCILA, CFG_PCI_MEMBASE2); /* PMM0 PCI Low Address */ out32r(PCIX0_PMM1PCIHA, 0x00000000); /* PMM0 PCI High Address */ out32r(PCIX0_PMM1MA, 0xE0000001); /* 512M + No prefetching, and enable region */ out32r(PCIX0_PTM1MS, 0x00000001); /* Memory Size/Attribute */ out32r(PCIX0_PTM1LA, 0); /* Local Addr. Reg */ out32r(PCIX0_PTM2MS, 0); /* Memory Size/Attribute */ out32r(PCIX0_PTM2LA, 0); /* Local Addr. Reg */ /*--------------------------------------------------------------------------+ * Set up Configuration registers *--------------------------------------------------------------------------*/ /* Program the board's subsystem id/vendor id */ pci_write_config_word(0, PCI_SUBSYSTEM_VENDOR_ID, CFG_PCI_SUBSYS_VENDORID); pci_write_config_word(0, PCI_SUBSYSTEM_ID, CFG_PCI_SUBSYS_ID); /* Configure command register as bus master */ pci_write_config_word(0, PCI_COMMAND, PCI_COMMAND_MASTER); /* 240nS PCI clock */ pci_write_config_word(0, PCI_LATENCY_TIMER, 1); /* No error reporting */ pci_write_config_word(0, PCI_ERREN, 0); pci_write_config_dword(0, PCI_BRDGOPT2, 0x00000101); } #endif /* defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT) */ /************************************************************************* * pci_master_init * ************************************************************************/ #if defined(CONFIG_PCI) && defined(CFG_PCI_MASTER_INIT) void pci_master_init(struct pci_controller *hose) { unsigned short temp_short; /*--------------------------------------------------------------------------+ | Write the PowerPC440 EP PCI Configuration regs. | Enable PowerPC440 EP to be a master on the PCI bus (PMM). | Enable PowerPC440 EP to act as a PCI memory target (PTM). +--------------------------------------------------------------------------*/ pci_read_config_word(0, PCI_COMMAND, &temp_short); pci_write_config_word(0, PCI_COMMAND, temp_short | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY); } #endif /* defined(CONFIG_PCI) && defined(CFG_PCI_MASTER_INIT) */ /************************************************************************* * is_pci_host * * This routine is called to determine if a pci scan should be * performed. With various hardware environments (especially cPCI and * PPMC) it's insufficient to depend on the state of the arbiter enable * bit in the strap register, or generic host/adapter assumptions. * * Rather than hard-code a bad assumption in the general 440 code, the * 440 pci code requires the board to decide at runtime. * * Return 0 for adapter mode, non-zero for host (monarch) mode. * * ************************************************************************/ #if defined(CONFIG_PCI) int is_pci_host(struct pci_controller *hose) { /* Bamboo is always configured as host. */ return (1); } #endif /* defined(CONFIG_PCI) */ /************************************************************************* * hw_watchdog_reset * * This routine is called to reset (keep alive) the watchdog timer * ************************************************************************/ #if defined(CONFIG_HW_WATCHDOG) void hw_watchdog_reset(void) { } #endif void board_reset(void) { /* give reset to BCSR */ *(unsigned char *)(CFG_BCSR_BASE | 0x06) = 0x09; }