Mirrors/u-boot
2
0
Fork 0
mirror of https://github.com/AsahiLinux/u-boot synced 2024-11-14 00:47:26 +00:00
Code Issues Projects Releases Packages Wiki Activity
u-boot/arch/powerpc/cpu/ppc4xx/4xx_pci.c
Stefan Roese 5e7abce991 ppc4xx: Big header cleanup, mostly PPC440 related 
This patch starts a bit PPC4xx header cleanup. First patch mostly
touches PPC440 files. A later patch will touch the PPC405 files as well.

This cleanup is done by creating header files for all SoC versions and
moving the SoC specific defines into these special headers. This way the
common header ppc405.h and ppc440.h can be cleaned up finally.

Signed-off-by: Stefan Roese <sr@denx.de>
2010-09-23 09:02:05 +02:00

883 lines
29 KiB
C
Raw Blame History

/*-----------------------------------------------------------------------------+
* This source code is dual-licensed. You may use it under the terms of
* the GNU General Public license version 2, or under the license below.
*
* This source code has been made available to you by IBM on an AS-IS
* basis. Anyone receiving this source is licensed under IBM
* copyrights to use it in any way he or she deems fit, including
* copying it, modifying it, compiling it, and redistributing it either
* with or without modifications. No license under IBM patents or
* patent applications is to be implied by the copyright license.
*
* Any user of this software should understand that IBM cannot provide
* technical support for this software and will not be responsible for
* any consequences resulting from the use of this software.
*
* Any person who transfers this source code or any derivative work
* must include the IBM copyright notice, this paragraph, and the
* preceding two paragraphs in the transferred software.
*
* COPYRIGHT I B M CORPORATION 1995
* LICENSED MATERIAL - PROGRAM PROPERTY OF I B M
*-----------------------------------------------------------------------------*/
/*----------------------------------------------------------------------------+
*
* File Name: 405gp_pci.c
*
* Function: Initialization code for the 405GP PCI Configuration regs.
*
* Author: Mark Game
*
* Change Activity-
*
* Date Description of Change BY
* --------- --------------------- ---
* 09-Sep-98 Created MCG
* 02-Nov-98 Removed External arbiter selected message JWB
* 27-Nov-98 Zero out PTMBAR2 and disable in PTM2MS JWB
* 04-Jan-99 Zero out other unused PMM and PTM regs. Change bus scan MCG
* from (0 to n) to (1 to n).
* 17-May-99 Port to Walnut JWB
* 17-Jun-99 Updated for VGA support JWB
* 21-Jun-99 Updated to allow SRAM region to be a target from PCI bus JWB
* 19-Jul-99 Updated for 405GP pass 1 errata #26 (Low PCI subsequent MCG
* target latency timer values are not supported).
* Should be fixed in pass 2.
* 09-Sep-99 Removed use of PTM2 since the SRAM region no longer needs JWB
* to be a PCI target. Zero out PTMBAR2 and disable in PTM2MS.
* 10-Dec-99 Updated PCI_Write_CFG_Reg for pass2 errata #6 JWB
* 11-Jan-00 Ensure PMMxMAs disabled before setting PMMxLAs. This is not
* really required after a reset since PMMxMAs are already
* disabled but is a good practice nonetheless. JWB
* 12-Jun-01 stefan.roese@esd-electronics.com
* - PCI host/adapter handling reworked
* 09-Jul-01 stefan.roese@esd-electronics.com
* - PCI host now configures from device 0 (not 1) to max_dev,
* (host configures itself)
* - On CPCI-405 pci base address and size is generated from
* SDRAM and FLASH size (CFG regs not used anymore)
* - Some minor changes for CPCI-405-A (adapter version)
* 14-Sep-01 stefan.roese@esd-electronics.com
* - CONFIG_PCI_SCAN_SHOW added to print pci devices upon startup
* 28-Sep-01 stefan.roese@esd-electronics.com
* - Changed pci master configuration for linux compatibility
* (no need for bios_fixup() anymore)
* 26-Feb-02 stefan.roese@esd-electronics.com
* - Bug fixed in pci configuration (Andrew May)
* - Removed pci class code init for CPCI405 board
* 15-May-02 stefan.roese@esd-electronics.com
* - New vga device handling
* 29-May-02 stefan.roese@esd-electronics.com
* - PCI class code init added (if defined)
*----------------------------------------------------------------------------*/
#include <common.h>
#include <command.h>
#include <asm/4xx_pci.h>
#include <asm/processor.h>
#include <asm/io.h>
#include <pci.h>
#ifdef CONFIG_PCI
DECLARE_GLOBAL_DATA_PTR;
#if defined(CONFIG_405GP) || defined(CONFIG_405EP)
#if defined(CONFIG_PMC405)
ushort pmc405_pci_subsys_deviceid(void);
#endif
/*#define DEBUG*/
/*
* Board-specific pci initialization
* Platform code can reimplement pci_pre_init() if needed
*/
int __pci_pre_init(struct pci_controller *hose)
{
#if defined(CONFIG_405EP)
/*
* Enable the internal PCI arbiter by default.
*
* On 405EP CPUs the internal arbiter can be controlled
* by the I2C strapping EEPROM. If you want to do so
* or if you want to disable the arbiter pci_pre_init()
* must be reimplemented without enabling the arbiter.
* The arbiter is enabled in this place because of
* compatibility reasons.
*/
mtdcr(CPC0_PCI, mfdcr(CPC0_PCI) | CPC0_PCI_ARBIT_EN);
#endif /* CONFIG_405EP */
return 1;
}
int pci_pre_init(struct pci_controller *hose)
__attribute__((weak, alias("__pci_pre_init")));
int __is_pci_host(struct pci_controller *hose)
{
#if defined(CONFIG_405GP)
if (mfdcr(CPC0_PSR) & PSR_PCI_ARBIT_EN)
return 1;
#elif defined (CONFIG_405EP)
if (mfdcr(CPC0_PCI) & CPC0_PCI_ARBIT_EN)
return 1;
#endif
return 0;
}
int is_pci_host(struct pci_controller *hose) __attribute__((weak, alias("__is_pci_host")));
/*-----------------------------------------------------------------------------+
* pci_init. Initializes the 405GP PCI Configuration regs.
*-----------------------------------------------------------------------------*/
void pci_405gp_init(struct pci_controller *hose)
{
int i, reg_num = 0;
bd_t *bd = gd->bd;
unsigned short temp_short;
unsigned long ptmpcila[2] = {CONFIG_SYS_PCI_PTM1PCI, CONFIG_SYS_PCI_PTM2PCI};
#if defined(CONFIG_PCI_4xx_PTM_OVERWRITE)
char *ptmla_str, *ptmms_str;
#endif
unsigned long ptmla[2] = {CONFIG_SYS_PCI_PTM1LA, CONFIG_SYS_PCI_PTM2LA};
unsigned long ptmms[2] = {CONFIG_SYS_PCI_PTM1MS, CONFIG_SYS_PCI_PTM2MS};
#if defined(CONFIG_PIP405) || defined (CONFIG_MIP405)
unsigned long pmmla[3] = {0x80000000, 0xA0000000, 0};
unsigned long pmmma[3] = {0xE0000001, 0xE0000001, 0};
unsigned long pmmpcila[3] = {0x80000000, 0x00000000, 0};
unsigned long pmmpciha[3] = {0x00000000, 0x00000000, 0};
#else
unsigned long pmmla[3] = {0x80000000, 0,0};
unsigned long pmmma[3] = {0xC0000001, 0,0};
unsigned long pmmpcila[3] = {0x80000000, 0,0};
unsigned long pmmpciha[3] = {0x00000000, 0,0};
#endif
#ifdef CONFIG_PCI_PNP
#if (CONFIG_PCI_HOST == PCI_HOST_AUTO)
char *s;
#endif
#endif
#if defined(CONFIG_PCI_4xx_PTM_OVERWRITE)
ptmla_str = getenv("ptm1la");
ptmms_str = getenv("ptm1ms");
if(NULL != ptmla_str && NULL != ptmms_str ) {
ptmla[0] = simple_strtoul (ptmla_str, NULL, 16);
ptmms[0] = simple_strtoul (ptmms_str, NULL, 16);
}
ptmla_str = getenv("ptm2la");
ptmms_str = getenv("ptm2ms");
if(NULL != ptmla_str && NULL != ptmms_str ) {
ptmla[1] = simple_strtoul (ptmla_str, NULL, 16);
ptmms[1] = simple_strtoul (ptmms_str, NULL, 16);
}
#endif
/*
* Register the hose
*/
hose->first_busno = 0;
hose->last_busno = 0xff;
/* ISA/PCI I/O space */
pci_set_region(hose->regions + reg_num++,
MIN_PCI_PCI_IOADDR,
MIN_PLB_PCI_IOADDR,
0x10000,
PCI_REGION_IO);
/* PCI I/O space */
pci_set_region(hose->regions + reg_num++,
0x00800000,
0xe8800000,
0x03800000,
PCI_REGION_IO);
reg_num = 2;
/* Memory spaces */
for (i=0; i<2; i++)
if (ptmms[i] & 1)
{
if (!i) hose->pci_fb = hose->regions + reg_num;
pci_set_region(hose->regions + reg_num++,
ptmpcila[i], ptmla[i],
~(ptmms[i] & 0xfffff000) + 1,
PCI_REGION_MEM |
PCI_REGION_SYS_MEMORY);
}
/* PCI memory spaces */
for (i=0; i<3; i++)
if (pmmma[i] & 1)
{
pci_set_region(hose->regions + reg_num++,
pmmpcila[i], pmmla[i],
~(pmmma[i] & 0xfffff000) + 1,
PCI_REGION_MEM);
}
hose->region_count = reg_num;
pci_setup_indirect(hose,
PCICFGADR,
PCICFGDATA);
if (hose->pci_fb)
pciauto_region_init(hose->pci_fb);
/* Let board change/modify hose & do initial checks */
if (pci_pre_init(hose) == 0) {
printf("PCI: Board-specific initialization failed.\n");
printf("PCI: Configuration aborted.\n");
return;
}
pci_register_hose(hose);
/*--------------------------------------------------------------------------+
* 405GP PCI Master configuration.
* Map one 512 MB range of PLB/processor addresses to PCI memory space.
* PLB address 0x80000000-0xBFFFFFFF ==> PCI address 0x80000000-0xBFFFFFFF
* Use byte reversed out routines to handle endianess.
*--------------------------------------------------------------------------*/
out32r(PMM0MA, (pmmma[0]&~0x1)); /* disable, configure PMMxLA, PMMxPCILA first */
out32r(PMM0LA, pmmla[0]);
out32r(PMM0PCILA, pmmpcila[0]);
out32r(PMM0PCIHA, pmmpciha[0]);
out32r(PMM0MA, pmmma[0]);
/*--------------------------------------------------------------------------+
* PMM1 is not used. Initialize them to zero.
*--------------------------------------------------------------------------*/
out32r(PMM1MA, (pmmma[1]&~0x1));
out32r(PMM1LA, pmmla[1]);
out32r(PMM1PCILA, pmmpcila[1]);
out32r(PMM1PCIHA, pmmpciha[1]);
out32r(PMM1MA, pmmma[1]);
/*--------------------------------------------------------------------------+
* PMM2 is not used. Initialize them to zero.
*--------------------------------------------------------------------------*/
out32r(PMM2MA, (pmmma[2]&~0x1));
out32r(PMM2LA, pmmla[2]);
out32r(PMM2PCILA, pmmpcila[2]);
out32r(PMM2PCIHA, pmmpciha[2]);
out32r(PMM2MA, pmmma[2]);
/*--------------------------------------------------------------------------+
* 405GP PCI Target configuration. (PTM1)
* Note: PTM1MS is hardwire enabled but we set the enable bit anyway.
*--------------------------------------------------------------------------*/
out32r(PTM1LA, ptmla[0]); /* insert address */
out32r(PTM1MS, ptmms[0]); /* insert size, enable bit is 1 */
pci_write_config_dword(PCIDEVID_405GP, PCI_BASE_ADDRESS_1, ptmpcila[0]);
/*--------------------------------------------------------------------------+
* 405GP PCI Target configuration. (PTM2)
*--------------------------------------------------------------------------*/
out32r(PTM2LA, ptmla[1]); /* insert address */
pci_write_config_dword(PCIDEVID_405GP, PCI_BASE_ADDRESS_2, ptmpcila[1]);
if (ptmms[1] == 0)
{
out32r(PTM2MS, 0x00000001); /* set enable bit */
pci_write_config_dword(PCIDEVID_405GP, PCI_BASE_ADDRESS_2, 0x00000000);
out32r(PTM2MS, 0x00000000); /* disable */
}
else
{
out32r(PTM2MS, ptmms[1]); /* insert size, enable bit is 1 */
}
/*
* Insert Subsystem Vendor and Device ID
*/
pci_write_config_word(PCIDEVID_405GP, PCI_SUBSYSTEM_VENDOR_ID, CONFIG_SYS_PCI_SUBSYS_VENDORID);
#ifdef CONFIG_CPCI405
if (is_pci_host(hose))
pci_write_config_word(PCIDEVID_405GP, PCI_SUBSYSTEM_ID, CONFIG_SYS_PCI_SUBSYS_DEVICEID);
else
pci_write_config_word(PCIDEVID_405GP, PCI_SUBSYSTEM_ID, CONFIG_SYS_PCI_SUBSYS_DEVICEID2);
#else
pci_write_config_word(PCIDEVID_405GP, PCI_SUBSYSTEM_ID, CONFIG_SYS_PCI_SUBSYS_DEVICEID);
#endif
/*
* Insert Class-code
*/
#ifdef CONFIG_SYS_PCI_CLASSCODE
pci_write_config_word(PCIDEVID_405GP, PCI_CLASS_SUB_CODE, CONFIG_SYS_PCI_CLASSCODE);
#endif /* CONFIG_SYS_PCI_CLASSCODE */
/*--------------------------------------------------------------------------+
* If PCI speed = 66MHz, set 66MHz capable bit.
*--------------------------------------------------------------------------*/
if (bd->bi_pci_busfreq >= 66000000) {
pci_read_config_word(PCIDEVID_405GP, PCI_STATUS, &temp_short);
pci_write_config_word(PCIDEVID_405GP,PCI_STATUS,(temp_short|PCI_STATUS_66MHZ));
}
#if (CONFIG_PCI_HOST != PCI_HOST_ADAPTER)
#if (CONFIG_PCI_HOST == PCI_HOST_AUTO)
if (is_pci_host(hose) ||
(((s = getenv("pciscan")) != NULL) && (strcmp(s, "yes") == 0)))
#endif
{
/*--------------------------------------------------------------------------+
* Write the 405GP PCI Configuration regs.
* Enable 405GP to be a master on the PCI bus (PMM).
* Enable 405GP to act as a PCI memory target (PTM).
*--------------------------------------------------------------------------*/
pci_read_config_word(PCIDEVID_405GP, PCI_COMMAND, &temp_short);
pci_write_config_word(PCIDEVID_405GP, PCI_COMMAND, temp_short |
PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY);
}
#endif
#if defined(CONFIG_405EP)
/*
* on ppc405ep vendor/device id is not set
* The user manual says 0x1014 (IBM) / 0x0156 (405GP!)
* are the correct values.
*/
pci_write_config_word(PCIDEVID_405GP, PCI_VENDOR_ID, PCI_VENDOR_ID_IBM);
pci_write_config_word(PCIDEVID_405GP,
PCI_DEVICE_ID, PCI_DEVICE_ID_IBM_405GP);
#endif
/*
* Set HCE bit (Host Configuration Enabled)
*/
pci_read_config_word(PCIDEVID_405GP, PCIBRDGOPT2, &temp_short);
pci_write_config_word(PCIDEVID_405GP, PCIBRDGOPT2, (temp_short | 0x0001));
#ifdef CONFIG_PCI_PNP
/*--------------------------------------------------------------------------+
* Scan the PCI bus and configure devices found.
*--------------------------------------------------------------------------*/
#if (CONFIG_PCI_HOST == PCI_HOST_AUTO)
if (is_pci_host(hose) ||
(((s = getenv("pciscan")) != NULL) && (strcmp(s, "yes") == 0)))
#endif
{
#ifdef CONFIG_PCI_SCAN_SHOW
printf("PCI: Bus Dev VenId DevId Class Int\n");
#endif
hose->last_busno = pci_hose_scan(hose);
}
#endif /* CONFIG_PCI_PNP */
}
/*
* drivers/pci/pci.c skips every host bridge but the 405GP since it could
* be set as an Adapter.
*
* I (Andrew May) don't know what we should do here, but I don't want
* the auto setup of a PCI device disabling what is done pci_405gp_init
* as has happened before.
*/
void pci_405gp_setup_bridge(struct pci_controller *hose, pci_dev_t dev,
struct pci_config_table *entry)
{
#ifdef DEBUG
printf("405gp_setup_bridge\n");
#endif
}
/*
*
*/
void pci_405gp_fixup_irq(struct pci_controller *hose, pci_dev_t dev)
{
unsigned char int_line = 0xff;
/*
* Write pci interrupt line register (cpci405 specific)
*/
switch (PCI_DEV(dev) & 0x03)
{
case 0:
int_line = 27 + 2;
break;
case 1:
int_line = 27 + 3;
break;
case 2:
int_line = 27 + 0;
break;
case 3:
int_line = 27 + 1;
break;
}
pci_hose_write_config_byte(hose, dev, PCI_INTERRUPT_LINE, int_line);
}
void pci_405gp_setup_vga(struct pci_controller *hose, pci_dev_t dev,
struct pci_config_table *entry)
{
unsigned int cmdstat = 0;
pciauto_setup_device(hose, dev, 6, hose->pci_mem, hose->pci_prefetch, hose->pci_io);
/* always enable io space on vga boards */
pci_hose_read_config_dword(hose, dev, PCI_COMMAND, &cmdstat);
cmdstat |= PCI_COMMAND_IO;
pci_hose_write_config_dword(hose, dev, PCI_COMMAND, cmdstat);
}
#if !(defined(CONFIG_PIP405) || defined (CONFIG_MIP405)) && !(defined (CONFIG_SC3))
/*
*As is these functs get called out of flash Not a horrible
*thing, but something to keep in mind. (no statics?)
*/
static struct pci_config_table pci_405gp_config_table[] = {
/*if VendID is 0 it terminates the table search (ie Walnut)*/
#ifdef CONFIG_SYS_PCI_SUBSYS_VENDORID
{CONFIG_SYS_PCI_SUBSYS_VENDORID, PCI_ANY_ID, PCI_CLASS_BRIDGE_HOST,
PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, pci_405gp_setup_bridge},
#endif
{PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA,
PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, pci_405gp_setup_vga},
{PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_NOT_DEFINED_VGA,
PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, pci_405gp_setup_vga},
{ }
};
static struct pci_controller hose = {
fixup_irq: pci_405gp_fixup_irq,
config_table: pci_405gp_config_table,
};
void pci_init_board(void)
{
/*we want the ptrs to RAM not flash (ie don't use init list)*/
hose.fixup_irq = pci_405gp_fixup_irq;
hose.config_table = pci_405gp_config_table;
pci_405gp_init(&hose);
}
#endif
#endif /* CONFIG_405GP */
/*-----------------------------------------------------------------------------+
* CONFIG_440
*-----------------------------------------------------------------------------*/
#if defined(CONFIG_440)
#if defined(CONFIG_SYS_PCI_MASTER_INIT) || defined(CONFIG_SYS_PCI_TARGET_INIT)
static struct pci_controller ppc440_hose = {0};
#endif
/*
* 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.
*
* Weak default implementation: "Normal" boards implement the PCI
* host functionality. This can be overridden for PCI adapter boards.
*/
int __is_pci_host(struct pci_controller *hose)
{
return 1;
}
int is_pci_host(struct pci_controller *hose)
__attribute__((weak, alias("__is_pci_host")));
#if defined(CONFIG_440EP) || defined(CONFIG_440EPX) || \
defined(CONFIG_440GR) || defined(CONFIG_440GRX)
#if defined(CONFIG_SYS_PCI_TARGET_INIT)
/*
* 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.
*/
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.
*/
/* PMM0 Mask/Attribute - disabled b4 setting */
out_le32((void *)PCIL0_PMM0MA, 0x00000000);
/* PMM0 Local Address */
out_le32((void *)PCIL0_PMM0LA, CONFIG_SYS_PCI_MEMBASE);
/* PMM0 PCI Low Address */
out_le32((void *)PCIL0_PMM0PCILA, CONFIG_SYS_PCI_MEMBASE);
/* PMM0 PCI High Address */
out_le32((void *)PCIL0_PMM0PCIHA, 0x00000000);
/* 512M + No prefetching, and enable region */
out_le32((void *)PCIL0_PMM0MA, 0xE0000001);
/* PMM1 Mask/Attribute - disabled b4 setting */
out_le32((void *)PCIL0_PMM1MA, 0x00000000);
/* PMM1 Local Address */
out_le32((void *)PCIL0_PMM1LA, CONFIG_SYS_PCI_MEMBASE2);
/* PMM1 PCI Low Address */
out_le32((void *)PCIL0_PMM1PCILA, CONFIG_SYS_PCI_MEMBASE2);
/* PMM1 PCI High Address */
out_le32((void *)PCIL0_PMM1PCIHA, 0x00000000);
/* 512M + No prefetching, and enable region */
out_le32((void *)PCIL0_PMM1MA, 0xE0000001);
out_le32((void *)PCIL0_PTM1MS, 0x00000001); /* Memory Size/Attribute */
out_le32((void *)PCIL0_PTM1LA, 0); /* Local Addr. Reg */
out_le32((void *)PCIL0_PTM2MS, 0); /* Memory Size/Attribute */
out_le32((void *)PCIL0_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,
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 /* CONFIG_SYS_PCI_TARGET_INIT */
/*
* 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.
*
*/
int __pci_pre_init(struct pci_controller *hose)
{
u32 reg;
/*
* Set priority for all PLB3 devices to 0.
* Set PLB3 arbiter to fair mode.
*/
mfsdr(SDR0_AMP1, reg);
mtsdr(SDR0_AMP1, (reg & 0x000000FF) | 0x0000FF00);
reg = mfdcr(PLB3A0_ACR);
mtdcr(PLB3A0_ACR, reg | 0x80000000);
/*
* Set priority for all PLB4 devices to 0.
*/
mfsdr(SDR0_AMP0, reg);
mtsdr(SDR0_AMP0, (reg & 0x000000FF) | 0x0000FF00);
reg = mfdcr(PLB4A0_ACR) | 0xa0000000;
mtdcr(PLB4A0_ACR, reg);
/*
* Set Nebula PLB4 arbiter to fair mode.
*/
/* Segment0 */
reg = (mfdcr(PLB4A0_ACR) & ~PLB4Ax_ACR_PPM_MASK) | PLB4Ax_ACR_PPM_FAIR;
reg = (reg & ~PLB4Ax_ACR_HBU_MASK) | PLB4Ax_ACR_HBU_ENABLED;
reg = (reg & ~PLB4Ax_ACR_RDP_MASK) | PLB4Ax_ACR_RDP_4DEEP;
reg = (reg & ~PLB4Ax_ACR_WRP_MASK) | PLB4Ax_ACR_WRP_2DEEP;
mtdcr(PLB4A0_ACR, reg);
/* Segment1 */
reg = (mfdcr(PLB4A1_ACR) & ~PLB4Ax_ACR_PPM_MASK) | PLB4Ax_ACR_PPM_FAIR;
reg = (reg & ~PLB4Ax_ACR_HBU_MASK) | PLB4Ax_ACR_HBU_ENABLED;
reg = (reg & ~PLB4Ax_ACR_RDP_MASK) | PLB4Ax_ACR_RDP_4DEEP;
reg = (reg & ~PLB4Ax_ACR_WRP_MASK) | PLB4Ax_ACR_WRP_2DEEP;
mtdcr(PLB4A1_ACR, reg);
#if defined(CONFIG_SYS_PCI_BOARD_FIXUP_IRQ)
hose->fixup_irq = board_pci_fixup_irq;
#endif
return 1;
}
#else /* defined(CONFIG_440EP) ... */
#if defined(CONFIG_SYS_PCI_TARGET_INIT)
void __pci_target_init(struct pci_controller * hose)
{
/*
* Disable everything
*/
out_le32((void *)PCIL0_PIM0SA, 0); /* disable */
out_le32((void *)PCIL0_PIM1SA, 0); /* disable */
out_le32((void *)PCIL0_PIM2SA, 0); /* disable */
out_le32((void *)PCIL0_EROMBA, 0); /* disable expansion rom */
/*
* Map all of SDRAM to PCI address 0x0000_0000. Note that the 440
* strapping options do not support sizes such as 128/256 MB.
*/
out_le32((void *)PCIL0_PIM0LAL, CONFIG_SYS_SDRAM_BASE);
out_le32((void *)PCIL0_PIM0LAH, 0);
out_le32((void *)PCIL0_PIM0SA, ~(gd->ram_size - 1) | 1);
out_le32((void *)PCIL0_BAR0, 0);
/*
* Program the board's subsystem id/vendor id
*/
out_le16((void *)PCIL0_SBSYSVID, CONFIG_SYS_PCI_SUBSYS_VENDORID);
out_le16((void *)PCIL0_SBSYSID, CONFIG_SYS_PCI_SUBSYS_DEVICEID);
out_le16((void *)PCIL0_CMD, in_le16((void *)PCIL0_CMD) |
PCI_COMMAND_MEMORY);
}
#endif /* CONFIG_SYS_PCI_TARGET_INIT */
int __pci_pre_init(struct pci_controller *hose)
{
/*
* This board is always configured as the host & requires the
* PCI arbiter to be enabled.
*/
if (!pci_arbiter_enabled()) {
printf("PCI: PCI Arbiter disabled!\n");
return 0;
}
return 1;
}
#endif /* defined(CONFIG_440EP) ... */
#if defined(CONFIG_SYS_PCI_TARGET_INIT)
void pci_target_init(struct pci_controller * hose)
__attribute__((weak, alias("__pci_target_init")));
#endif /* CONFIG_SYS_PCI_TARGET_INIT */
int pci_pre_init(struct pci_controller *hose)
__attribute__((weak, alias("__pci_pre_init")));
#if defined(CONFIG_SYS_PCI_MASTER_INIT)
void __pci_master_init(struct pci_controller *hose)
{
u16 reg;
/*
* 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, &reg);
pci_write_config_word(0, PCI_COMMAND, reg |
PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY);
}
void pci_master_init(struct pci_controller *hose)
__attribute__((weak, alias("__pci_master_init")));
#endif /* CONFIG_SYS_PCI_MASTER_INIT */
#if defined(CONFIG_SYS_PCI_MASTER_INIT) || defined(CONFIG_SYS_PCI_TARGET_INIT)
int pci_440_init (struct pci_controller *hose)
{
int reg_num = 0;
#ifndef CONFIG_DISABLE_PISE_TEST
/*--------------------------------------------------------------------------+
* The PCI initialization sequence enable bit must be set ... if not abort
* pci setup since updating the bit requires chip reset.
*--------------------------------------------------------------------------*/
#if defined(CONFIG_440GX) || defined(CONFIG_440SP) || defined(CONFIG_440SPE)
unsigned long strap;
mfsdr(SDR0_SDSTP1,strap);
if ((strap & SDR0_SDSTP1_PISE_MASK) == 0) {
printf("PCI: SDR0_STRP1[PISE] not set.\n");
printf("PCI: Configuration aborted.\n");
return -1;
}
#elif defined(CONFIG_440GP)
unsigned long strap;
strap = mfdcr(CPC0_STRP1);
if ((strap & CPC0_STRP1_PISE_MASK) == 0) {
printf("PCI: CPC0_STRP1[PISE] not set.\n");
printf("PCI: Configuration aborted.\n");
return -1;
}
#endif
#endif /* CONFIG_DISABLE_PISE_TEST */
/*--------------------------------------------------------------------------+
* PCI controller init
*--------------------------------------------------------------------------*/
hose->first_busno = 0;
hose->last_busno = 0;
/* PCI I/O space */
pci_set_region(hose->regions + reg_num++,
0x00000000,
PCIL0_IOBASE,
0x10000,
PCI_REGION_IO);
/* PCI memory space */
pci_set_region(hose->regions + reg_num++,
CONFIG_SYS_PCI_TARGBASE,
CONFIG_SYS_PCI_MEMBASE,
#ifdef CONFIG_SYS_PCI_MEMSIZE
CONFIG_SYS_PCI_MEMSIZE,
#else
0x10000000,
#endif
PCI_REGION_MEM );
#if defined(CONFIG_PCI_SYS_MEM_BUS) && defined(CONFIG_PCI_SYS_MEM_PHYS) && \
defined(CONFIG_PCI_SYS_MEM_SIZE)
/* System memory space */
pci_set_region(hose->regions + reg_num++,
CONFIG_PCI_SYS_MEM_BUS,
CONFIG_PCI_SYS_MEM_PHYS,
CONFIG_PCI_SYS_MEM_SIZE,
PCI_REGION_MEM | PCI_REGION_SYS_MEMORY );
#endif
hose->region_count = reg_num;
pci_setup_indirect(hose, PCIL0_CFGADR, PCIL0_CFGDATA);
/* Let board change/modify hose & do initial checks */
if (pci_pre_init(hose) == 0) {
printf("PCI: Board-specific initialization failed.\n");
printf("PCI: Configuration aborted.\n");
return -1;
}
pci_register_hose( hose );
/*--------------------------------------------------------------------------+
* PCI target init
*--------------------------------------------------------------------------*/
#if defined(CONFIG_SYS_PCI_TARGET_INIT)
pci_target_init(hose); /* Let board setup pci target */
#else
out16r( PCIL0_SBSYSVID, CONFIG_SYS_PCI_SUBSYS_VENDORID );
out16r( PCIL0_SBSYSID, CONFIG_SYS_PCI_SUBSYS_ID );
out16r( PCIL0_CLS, 0x00060000 ); /* Bridge, host bridge */
#endif
#if defined(CONFIG_440GX) || defined(CONFIG_440SPE) || \
defined(CONFIG_460EX) || defined(CONFIG_460GT)
out32r( PCIL0_BRDGOPT1, 0x04000060 ); /* PLB Rq pri highest */
out32r( PCIL0_BRDGOPT2, in32(PCIL0_BRDGOPT2) | 0x83 ); /* Enable host config, clear Timeout, ensure int src1 */
#elif defined(PCIL0_BRDGOPT1)
out32r( PCIL0_BRDGOPT1, 0x10000060 ); /* PLB Rq pri highest */
out32r( PCIL0_BRDGOPT2, in32(PCIL0_BRDGOPT2) | 1 ); /* Enable host config */
#endif
/*--------------------------------------------------------------------------+
* PCI master init: default is one 256MB region for PCI memory:
* 0x3_00000000 - 0x3_0FFFFFFF ==> CONFIG_SYS_PCI_MEMBASE
*--------------------------------------------------------------------------*/
#if defined(CONFIG_SYS_PCI_MASTER_INIT)
pci_master_init(hose); /* Let board setup pci master */
#else
out32r( PCIL0_POM0SA, 0 ); /* disable */
out32r( PCIL0_POM1SA, 0 ); /* disable */
out32r( PCIL0_POM2SA, 0 ); /* disable */
#if defined(CONFIG_440SPE)
out32r( PCIL0_POM0LAL, 0x10000000 );
out32r( PCIL0_POM0LAH, 0x0000000c );
#elif defined(CONFIG_460EX) || defined(CONFIG_460GT)
out32r( PCIL0_POM0LAL, 0x20000000 );
out32r( PCIL0_POM0LAH, 0x0000000c );
#else
out32r( PCIL0_POM0LAL, 0x00000000 );
out32r( PCIL0_POM0LAH, 0x00000003 );
#endif
out32r( PCIL0_POM0PCIAL, CONFIG_SYS_PCI_MEMBASE );
out32r( PCIL0_POM0PCIAH, 0x00000000 );
out32r( PCIL0_POM0SA, 0xf0000001 ); /* 256MB, enabled */
out32r( PCIL0_STS, in32r( PCIL0_STS ) & ~0x0000fff8 );
#endif
/*--------------------------------------------------------------------------+
* PCI host configuration -- we don't make any assumptions here ... the
* _board_must_indicate_ what to do -- there's just too many runtime
* scenarios in environments like cPCI, PPMC, etc. to make a determination
* based on hard-coded values or state of arbiter enable.
*--------------------------------------------------------------------------*/
if (is_pci_host(hose)) {
#ifdef CONFIG_PCI_SCAN_SHOW
printf("PCI: Bus Dev VenId DevId Class Int\n");
#endif
#if !defined(CONFIG_440EP) && !defined(CONFIG_440GR) && \
!defined(CONFIG_440EPX) && !defined(CONFIG_440GRX)
out16r( PCIL0_CMD, in16r( PCIL0_CMD ) | PCI_COMMAND_MASTER);
#endif
hose->last_busno = pci_hose_scan(hose);
}
return hose->last_busno;
}
#endif
void pci_init_board(void)
{
int busno = 0;
/*
* Only init PCI when either master or target functionality
* is selected.
*/
#if defined(CONFIG_SYS_PCI_MASTER_INIT) || defined(CONFIG_SYS_PCI_TARGET_INIT)
busno = pci_440_init (&ppc440_hose);
#endif
#if (defined(CONFIG_440SPE) || \
defined(CONFIG_460EX) || defined(CONFIG_460GT)) && \
!defined(CONFIG_PCI_DISABLE_PCIE)
pcie_setup_hoses(busno + 1);
#endif
}
#endif /* CONFIG_440 */
#if defined(CONFIG_405EX)
void pci_init_board(void)
{
#ifdef CONFIG_PCI_SCAN_SHOW
printf("PCI: Bus Dev VenId DevId Class Int\n");
#endif
pcie_setup_hoses(0);
}
#endif /* CONFIG_405EX */
#endif /* CONFIG_PCI */
Reference in a new issue View git blame Copy permalink