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MPC8349EMDS: Add PCI Agent (PCISLAVE) support

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Add the ability for the MPC8349EMDS to run in PCI Agent mode, acting as a
PCI card rather than a host computer.

Signed-off-by: Ira W. Snyder <iws@ovro.caltech.edu>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
This commit is contained in:
Ira W. Snyder 2008-08-22 11:00:15 -07:00 committed by Kim Phillips
parent 4ff9aea9d6
commit 447ad5768a
3 changed files with 79 additions and 1 deletions
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9
board/freescale/mpc8349emds/mpc8349emds.c
View File

@ -165,6 +165,15 @@ int fixed_sdram(void)
int checkboard (void)
{
/*
* Warning: do not read the BCSR registers here
*
* There is a timing bug in the 8349E and 8349EA BCSR code
* version 1.2 (read from BCSR 11) that will cause the CFI
* flash initialization code to overwrite BCSR 0, disabling
* the serial ports and gigabit ethernet
*/
puts("Board: Freescale MPC8349EMDS\n");
return 0;
}

49
board/freescale/mpc8349emds/pci.c
View File

@ -75,6 +75,7 @@ static struct pci_region pci2_regions[] = {
};
#endif
#ifndef CONFIG_PCISLAVE
void pib_init(void)
{
u8 val8, orig_i2c_bus;
@ -166,4 +167,52 @@ void pci_init_board(void)
#endif
}
#else
void pci_init_board(void)
{
volatile immap_t *immr = (volatile immap_t *)CFG_IMMR;
volatile clk83xx_t *clk = (volatile clk83xx_t *)&immr->clk;
volatile law83xx_t *pci_law = immr->sysconf.pcilaw;
volatile pcictrl83xx_t *pci_ctrl = &immr->pci_ctrl[0];
struct pci_region *reg[] = { pci1_regions };
/* Enable all 8 PCI_CLK_OUTPUTS */
clk->occr = 0xff000000;
udelay(2000);
/* Configure PCI Local Access Windows */
pci_law[0].bar = CFG_PCI1_MEM_PHYS & LAWBAR_BAR;
pci_law[0].ar = LAWAR_EN | LAWAR_SIZE_1G;
pci_law[1].bar = CFG_PCI1_IO_PHYS & LAWBAR_BAR;
pci_law[1].ar = LAWAR_EN | LAWAR_SIZE_4M;
udelay(2000);
mpc83xx_pci_init(1, reg, 0);
/* Configure PCI Inbound Translation Windows (3 1MB windows) */
pci_ctrl->pitar0 = 0x0;
pci_ctrl->pibar0 = 0x0;
pci_ctrl->piwar0 = PIWAR_EN | PIWAR_PF | PIWAR_RTT_SNOOP |
PIWAR_WTT_SNOOP | PIWAR_IWS_1M;
pci_ctrl->pitar1 = 0x0;
pci_ctrl->pibar1 = 0x0;
pci_ctrl->piebar1 = 0x0;
pci_ctrl->piwar1 = PIWAR_EN | PIWAR_PF | PIWAR_RTT_SNOOP |
PIWAR_WTT_SNOOP | PIWAR_IWS_1M;
pci_ctrl->pitar2 = 0x0;
pci_ctrl->pibar2 = 0x0;
pci_ctrl->piebar2 = 0x0;
pci_ctrl->piwar2 = PIWAR_EN | PIWAR_PF | PIWAR_RTT_SNOOP |
PIWAR_WTT_SNOOP | PIWAR_IWS_1M;
/* Unlock the configuration bit */
mpc83xx_pcislave_unlock(0);
printf("PCI: Agent mode enabled\n");
}
#endif /* CONFIG_PCISLAVE */
#endif /* CONFIG_PCI */

22
include/configs/MPC8349EMDS.h
View File

@ -48,6 +48,11 @@
#define CONFIG_83XX_CLKIN 33000000 /* in Hz */
#endif
#ifdef CONFIG_PCISLAVE
#define CONFIG_PCI
#define CONFIG_83XX_PCICLK 66666666 /* in Hz */
#endif /* CONFIG_PCISLAVE */
#ifndef CONFIG_SYS_CLK_FREQ
#ifdef PCI_66M
#define CONFIG_SYS_CLK_FREQ 66000000
@ -575,6 +580,20 @@
HRCWL_CORE_TO_CSB_1X1)
#endif
#ifdef CONFIG_PCISLAVE
#define CFG_HRCW_HIGH (\
HRCWH_PCI_AGENT |\
HRCWH_64_BIT_PCI |\
HRCWH_PCI1_ARBITER_DISABLE |\
HRCWH_PCI2_ARBITER_DISABLE |\
HRCWH_CORE_ENABLE |\
HRCWH_FROM_0X00000100 |\
HRCWH_BOOTSEQ_DISABLE |\
HRCWH_SW_WATCHDOG_DISABLE |\
HRCWH_ROM_LOC_LOCAL_16BIT |\
HRCWH_TSEC1M_IN_GMII |\
HRCWH_TSEC2M_IN_GMII )
#else
#if defined(PCI_64BIT)
#define CFG_HRCW_HIGH (\
HRCWH_PCI_HOST |\
@ -601,7 +620,8 @@
HRCWH_ROM_LOC_LOCAL_16BIT |\
HRCWH_TSEC1M_IN_GMII |\
HRCWH_TSEC2M_IN_GMII )
#endif
#endif /* PCI_64BIT */
#endif /* CONFIG_PCISLAVE */
/*
* System performance