diff options
Diffstat (limited to 'arch/arm/mach-mvebu/arm64-common.c')
| -rw-r--r-- | arch/arm/mach-mvebu/arm64-common.c | 37 |
1 files changed, 31 insertions, 6 deletions
diff --git a/arch/arm/mach-mvebu/arm64-common.c b/arch/arm/mach-mvebu/arm64-common.c index 7055a81de3..8f026559c2 100644 --- a/arch/arm/mach-mvebu/arm64-common.c +++ b/arch/arm/mach-mvebu/arm64-common.c @@ -17,6 +17,23 @@ DECLARE_GLOBAL_DATA_PTR; /* + * Not all memory is mapped in the MMU. So we need to restrict the + * memory size so that U-Boot does not try to access it. Also, the + * internal registers are located at 0xf000.0000 - 0xffff.ffff. + * Currently only 2GiB are mapped for system memory. This is what + * we pass to the U-Boot subsystem here. + */ +#define USABLE_RAM_SIZE 0x80000000 + +ulong board_get_usable_ram_top(ulong total_size) +{ + if (gd->ram_size > USABLE_RAM_SIZE) + return USABLE_RAM_SIZE; + + return gd->ram_size; +} + +/* * On ARMv8, MBus is not configured in U-Boot. To enable compilation * of the already implemented drivers, lets add a dummy version of * this function so that linking does not fail. @@ -109,12 +126,20 @@ int arch_early_init_r(void) { struct udevice *dev; int ret; - - /* Call the comphy code via the MISC uclass driver */ - ret = uclass_get_device(UCLASS_MISC, 0, &dev); - if (ret) { - debug("COMPHY init failed: %d\n", ret); - return -ENODEV; + int i; + + /* + * Loop over all MISC uclass drivers to call the comphy code + * and init all CP110 devices enabled in the DT + */ + i = 0; + while (1) { + /* Call the comphy code via the MISC uclass driver */ + ret = uclass_get_device(UCLASS_MISC, i++, &dev); + + /* We're done, once no further CP110 device is found */ + if (ret) + break; } /* Cause the SATA device to do its early init */ |