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arm: mvebu: Move PCI(e) MBUS window to end of RAM

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With patch 49b23e035d (pci: mvebu: Increase size of PCIe default mapping)
the mapping size for each PCI(e) controller was increased from 32MiB to
128MiB. This leads to problems on boards with multiple PCIe slots / ports
which are unable to map all PCIe ports, e.g. the Armada-XP theadorable:

DRAM:  2 GiB (667 MHz, 64-bit, ECC not enabled)
SF: Detected m25p128 with page size 256 Bytes, erase size 256 KiB, total 16 MiB
Cannot add window '4:f8', conflicts with another window
PCIe unable to add mbus window for mem at f0000000+08000000
Model: Marvell Armada XP theadorable

This patch moves the base address for the PCI(e) memory spaces from
0xe8000000 to the end of SDRAM (clipped to a max of 0xc0000000 right now).
This gives move room and flexibility for PCI(e) mappings.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: VlaoMao <vlaomao@gmail.com>
Tested-by: VlaoMao <vlaomao at gmail.com>
This commit is contained in:
Stefan Roese 2018-10-22 14:21:17 +02:00
parent 5ef76e59c1
commit a8483505e8
2 changed files with 9 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
arch/arm/mach-mvebu/dram.c
View File

@ -33,7 +33,9 @@ struct sdram_addr_dec {
#define REG_CPUCS_WIN_WIN0_CS(x) (((x) & 0x3) << 2)
#define REG_CPUCS_WIN_SIZE(x) (((x) & 0xff) << 24)
#define SDRAM_SIZE_MAX 0xc0000000
#ifndef MVEBU_SDRAM_SIZE_MAX
#define MVEBU_SDRAM_SIZE_MAX 0xc0000000
#endif
#define SCRUB_MAGIC 0xbeefdead
@ -275,8 +277,8 @@ int dram_init(void)
* address space left for the internal registers etc.
*/
size += mvebu_sdram_bs(i);
if (size > SDRAM_SIZE_MAX)
size = SDRAM_SIZE_MAX;
if (size > MVEBU_SDRAM_SIZE_MAX)
size = MVEBU_SDRAM_SIZE_MAX;
}
for (; i < CONFIG_NR_DRAM_BANKS; i++) {
@ -312,7 +314,7 @@ int dram_init_banksize(void)
/* Clip the banksize to 1GiB if it exceeds the max size */
size += gd->bd->bi_dram[i].size;
if (size > SDRAM_SIZE_MAX)
if (size > MVEBU_SDRAM_SIZE_MAX)
mvebu_sdram_bs_set(i, 0x40000000);
}

4
arch/arm/mach-mvebu/include/mach/cpu.h
View File

@ -68,10 +68,12 @@ enum {
MVEBU_SOC_UNKNOWN,
};
#define MVEBU_SDRAM_SIZE_MAX 0xc0000000
/*
* Default Device Address MAP BAR values
*/
#define MBUS_PCI_MEM_BASE 0xE8000000
#define MBUS_PCI_MEM_BASE MVEBU_SDRAM_SIZE_MAX
#define MBUS_PCI_MEM_SIZE (128 << 20)
#define MBUS_PCI_IO_BASE 0xF1100000
#define MBUS_PCI_IO_SIZE (64 << 10)