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mpc83xx: Add support for MPC83xx PCI-E controllers

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This patch adds support for MPC83xx PCI-E controllers in Root Complex
mode.

The patch is based on Tony Li and Dave Liu work[1].

Though unlike the original patch, by default we don't register PCI-E
buses for use in U-Boot, we only configure the controllers for future
use in other OSes (Linux). This is done because we don't have enough
of spare BATs to map all the PCI-E regions.

To actually use PCI-E in U-Boot, users should explicitly define
CONFIG_83XX_GENERIC_PCIE_REGISTER_HOSES symbol in the board file. And
only then U-Boot will able to access PCI-E, but at the cost of disabled
address translation.

[1] http://lists.denx.de/pipermail/u-boot/2008-January/027630.html

Signed-off-by: Tony Li <tony.li@freescale.com>
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Acked-by: Dave Liu <daveliu@freescale.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
This commit is contained in:
Anton Vorontsov 2009-01-08 04:26:12 +03:00 • committed by Kim Phillips
parent 88ecf55cab
commit fd6646c0b9
7 changed files with 488 additions and 23 deletions
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4
include/pci.h
View file

@ -382,6 +382,8 @@ extern void pci_cfgfunc_config_device(struct pci_controller* hose, pci_dev_t dev
#define MAX_PCI_REGIONS 7
#define INDIRECT_TYPE_NO_PCIE_LINK 1
/*
* Structure of a PCI controller (host bridge)
*/
@ -394,6 +396,8 @@ struct pci_controller {
volatile unsigned int *cfg_addr;
volatile unsigned char *cfg_data;
int indirect_type;
struct pci_region regions[MAX_PCI_REGIONS];
int region_count;