diff options
Diffstat (limited to 'board/freescale/p1_p2_rdb/pci.c')
| -rw-r--r-- | board/freescale/p1_p2_rdb/pci.c | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/board/freescale/p1_p2_rdb/pci.c b/board/freescale/p1_p2_rdb/pci.c new file mode 100644 index 0000000..174a8a7 --- /dev/null +++ b/board/freescale/p1_p2_rdb/pci.c @@ -0,0 +1,117 @@ +/* + * Copyright 2009 Freescale Semiconductor, Inc. + * + * 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 <command.h> +#include <pci.h> +#include <asm/immap_85xx.h> +#include <asm/io.h> +#include <asm/fsl_pci.h> +#include <libfdt.h> +#include <fdt_support.h> + +DECLARE_GLOBAL_DATA_PTR; + +#ifdef CONFIG_PCIE1 +static struct pci_controller pcie1_hose; +#endif + +#ifdef CONFIG_PCIE2 +static struct pci_controller pcie2_hose; +#endif + +void pci_init_board(void) +{ + struct fsl_pci_info pci_info[2]; + volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR); + uint devdisr = in_be32(&gur->devdisr); + uint io_sel = (in_be32(&gur->pordevsr) & MPC85xx_PORDEVSR_IO_SEL) >> 19; + uint host_agent = (in_be32(&gur->porbmsr) & MPC85xx_PORBMSR_HA) >> 16; + int num = 0; + int first_free_busno = 0; + + int pcie_ep, pcie_configured; + + debug (" pci_init_board: devdisr=%x, io_sel=%x, host_agent=%x\n", + devdisr, io_sel, host_agent); + + if (!(gur->pordevsr & MPC85xx_PORDEVSR_SGMII2_DIS)) + printf (" eTSEC2 is in sgmii mode.\n"); + +#ifdef CONFIG_PCIE2 + SET_STD_PCIE_INFO(pci_info[num], 2); + pcie_ep = (host_agent == 2) || (host_agent == 4) || + (host_agent == 6) || (host_agent == 0); + pcie_configured = (io_sel == 0xE); + + if (pcie_configured && !(devdisr & MPC85xx_DEVDISR_PCIE)){ + puts ("\n PCIE2 connected to Slot 1 as "); + printf ("%s (base address %lx)", + pcie_ep ? "End Point": "Root Complex", pci_info[num].regs); + first_free_busno = fsl_pci_init_port(&pci_info[num], + &pcie2_hose, first_free_busno); + num++; + } else { + printf (" PCIE2: disabled\n"); + } +#else + set_bits32(&gur->devdisr, MPC85xx_DEVDISR_PCIE2); /* disable */ +#endif + +#ifdef CONFIG_PCIE1 + SET_STD_PCIE_INFO(pci_info[num], 1); + + pcie_ep = (host_agent <= 1) || (host_agent == 4) || + (host_agent == 5); + pcie_configured = (io_sel == 0xE); + + if (pcie_configured && !(devdisr & MPC85xx_DEVDISR_PCIE)){ + puts ("\n PCIE1 connected to Slot 2 as "); + printf ("%s (base address %lx)", + pcie_ep ? "End Point" : "Root Complex", + pci_info[num].regs); + first_free_busno = fsl_pci_init_port(&pci_info[num], + &pcie1_hose, first_free_busno); + num++; + } else { + printf (" PCIE1: disabled\n"); + } +#else + set_bits32(&gur->devdisr, MPC85xx_DEVDISR_PCIE); /* disable */ +#endif +} + +void ft_pci_board_setup(void *blob) +{ +/* According to h/w manual, PCIE2 is at lower address(0x9000) + * than PCIE1(0xa000). + * Hence PCIE2 is made to occupy the pci1 position in dts to + * keep the addresses sorted there. + * Generally the case with all FSL SOCs. + */ +#ifdef CONFIG_PCIE2 + ft_fsl_pci_setup(blob, "pci1", &pcie2_hose); +#endif +#ifdef CONFIG_PCIE1 + ft_fsl_pci_setup(blob, "pci2", &pcie1_hose); +#endif +} |