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/*
* (C) Copyright 2008
* Dirk Eibach, Guntermann & Drunck GmbH, eibach@gdsys.de
*
* Based on board/amcc/yosemite/yosemite.c
* (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>
DECLARE_GLOBAL_DATA_PTR;
/* info for FLASH chips */
extern flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];
int board_early_init_f(void)
{
register uint reg;
/*
* Setup the external bus controller/chip selects
*/
mfebc(EBC0_CFG, reg);
mtebc(EBC0_CFG, reg | 0x04000000); /* Set ATC */
/*
* Setup the GPIO pins
*/
/* setup Address lines for flash size 64Meg. */
out32(GPIO0_OSRL, in32(GPIO0_OSRL) | 0x54000000);
out32(GPIO0_TSRL, in32(GPIO0_TSRL) | 0x54000000);
out32(GPIO0_ISR1L, in32(GPIO0_ISR1L) | 0x54000000);
/* 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);
/* UART0 and UART1*/
out32(GPIO1_TCR, in32(GPIO1_TCR) | 0x16000000);
out32(GPIO1_OSRL, in32(GPIO1_OSRL) | 0x02180000);
out32(GPIO1_ISR1L, in32(GPIO1_ISR1L) | 0x00400000);
out32(GPIO1_ISR2L, in32(GPIO1_ISR2L) | 0x04010000);
/* disable boot-eeprom WP */
out32(GPIO0_OSRL, in32(GPIO0_OSRL) & ~0x00C00000);
out32(GPIO0_TSRL, in32(GPIO0_TSRL) & ~0x00C00000);
out32(GPIO0_ISR1L, in32(GPIO0_ISR1L) & ~0x00C00000);
out32(GPIO0_TCR, in32(GPIO0_TCR) | 0x08000000);
out32(GPIO0_OR, in32(GPIO0_OR) & ~0x08000000);
/* external interrupts IRQ0...3 */
out32(GPIO1_TCR, in32(GPIO1_TCR) & ~0x00f00000);
out32(GPIO1_TSRL, in32(GPIO1_TSRL) & ~0x00005500);
out32(GPIO1_ISR1L, in32(GPIO1_ISR1L) | 0x00005500);
/*
* 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(SDR0_PCI0, reg);
mtsdr(SDR0_PCI0, 0x80000000 | reg); /* PCI arbiter enabled */
mtsdr(SDR0_PFC0, 0x00003e00); /* Pin function */
mtsdr(SDR0_PFC1, 0x00048000); /* Pin function: UART0 has 4 pins */
return 0;
}
int misc_init_r(void)
{
uint pbcr;
int size_val;
uint sz;
/* Re-do sizing to get full correct info */
mfebc(PB0CR, pbcr);
if (gd->bd->bi_flashsize > 0x08000000)
panic("Max. flash banksize is 128 MB!\n");
for (sz = gd->bd->bi_flashsize, size_val = 7;
((sz & 0x08000000) == 0) && (size_val > 0); --size_val)
sz <<= 1;
pbcr = (pbcr & 0x0001ffff) | gd->bd->bi_flashstart | (size_val << 17);
mtebc(PB0CR, 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,
-CONFIG_SYS_MONITOR_LEN,
0xffffffff,
&flash_info[0]);
return 0;
}
int checkboard(void)
{
char *s = getenv("serial#");
printf("Board: GDPPC440ETX - G&D PPC440EP/GR ETX-module");
if (s != NULL) {
puts(", serial# ");
puts(s);
}
putc('\n');
return 0;
}
/*
* 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(SD0_AMP1, addr);
mtsdr(SD0_AMP1, (addr & 0x000000FF) | 0x0000FF00);
addr = mfdcr(PLB3_ACR);
mtdcr(PLB3_ACR, addr | 0x80000000);
/*
* Set priority for all PLB4 devices to 0.
*/
mfsdr(SD0_AMP0, addr);
mtsdr(SD0_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);
/* enable 66 MHz ext. Clock */
out32(GPIO1_TCR, in32(GPIO1_TCR) | 0x00008000);
out32(GPIO1_OR, in32(GPIO1_OR) | 0x00008000);
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(CONFIG_SYS_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); /* disabled b4 setting */
out32r(PCIX0_PMM0LA, CONFIG_SYS_PCI_MEMBASE);
out32r(PCIX0_PMM0PCILA, CONFIG_SYS_PCI_MEMBASE);
out32r(PCIX0_PMM0PCIHA, 0x00000000);
out32r(PCIX0_PMM0MA, 0xE0000001); /* 512M, no prefetch, enable region */
out32r(PCIX0_PMM1MA, 0x00000000); /* disabled b4 setting */
out32r(PCIX0_PMM1LA, CONFIG_SYS_PCI_MEMBASE2);
out32r(PCIX0_PMM1PCILA, CONFIG_SYS_PCI_MEMBASE2);
out32r(PCIX0_PMM1PCIHA, 0x00000000);
out32r(PCIX0_PMM1MA, 0xE0000001); /* 512M, no prefetch, enable region */
out32r(PCIX0_PTM1MS, 0x00000001);
out32r(PCIX0_PTM1LA, 0);
out32r(PCIX0_PTM2MS, 0);
out32r(PCIX0_PTM2LA, 0);
/*
* Set up Configuration registers
*/
/* Program the board's subsystem id/vendor id */
pci_write_config_word(0, PCI_SUBSYSTEM_VENDOR_ID,
CONFIG_SYS_PCI_SUBSYS_VENDORID);
pci_write_config_word(0, PCI_SUBSYSTEM_ID, CONFIG_SYS_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(CONFIG_SYS_PCI_TARGET_INIT) */
/*
* pci_master_init
*
*/
#if defined(CONFIG_PCI) && defined(CONFIG_SYS_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(CONFIG_SYS_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)
{
return 1;
}
#endif /* defined(CONFIG_PCI) */
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