diff options
| author | Justin TerAvest <teravest@google.com> | 2018-01-17 16:36:30 -0800 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2018-01-25 16:50:17 +0000 |
| commit | ca2ed9f450682c5f23ee1f3affac8b6dba7fdc0b (patch) | |
| tree | 6c73b52c016bf59eee8d6371793ef479aa75595b /src | |
| parent | 4eaf0fa1550805ba9f3c24fb8675a6e77bd40101 (diff) | |
| download | coreboot-ca2ed9f450682c5f23ee1f3affac8b6dba7fdc0b.tar.xz | |
sconfig: Add a new mmio resource type
Add support for a mmio resource in the devicetree to allow
memory-mapped IO addresses to be assigned to given values.
AMD platforms perform a significant amount of configuration through
these MMIO addresses, including I2C bus configuration.
BUG=b:72121803
Change-Id: I5608721c22c1b229f527815b5f17fff3a080c3c8
Signed-off-by: Justin TerAvest <teravest@chromium.org>
Reviewed-on: https://review.coreboot.org/23319
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/device/device_util.c | 8 | ||||
| -rw-r--r-- | src/include/device/path.h | 6 |
2 files changed, 14 insertions, 0 deletions
diff --git a/src/device/device_util.c b/src/device/device_util.c index 6ccf02cc05..6bc2730143 100644 --- a/src/device/device_util.c +++ b/src/device/device_util.c @@ -257,6 +257,7 @@ u32 dev_path_encode(struct device *dev) ret |= dev->path.spi.cs; break; case DEVICE_PATH_NONE: + case DEVICE_PATH_MMIO: /* don't care */ default: break; } @@ -332,6 +333,10 @@ const char *dev_path(struct device *dev) snprintf(buffer, sizeof (buffer), "SPI: %02x", dev->path.spi.cs); break; + case DEVICE_PATH_MMIO: + snprintf(buffer, sizeof (buffer), "MMIO: %08x", + dev->path.mmio.addr); + break; default: printk(BIOS_ERR, "Unknown device path type: %d\n", dev->path.type); @@ -406,6 +411,9 @@ int path_eq(struct device_path *path1, struct device_path *path2) case DEVICE_PATH_SPI: equal = (path1->spi.cs == path2->spi.cs); break; + case DEVICE_PATH_MMIO: + equal = (path1->mmio.addr == path2->mmio.addr); + break; default: printk(BIOS_ERR, "Unknown device type: %d\n", path1->type); break; diff --git a/src/include/device/path.h b/src/include/device/path.h index 5109fdaec3..eaa9cc7d67 100644 --- a/src/include/device/path.h +++ b/src/include/device/path.h @@ -15,6 +15,7 @@ enum device_path_type { DEVICE_PATH_IOAPIC, DEVICE_PATH_GENERIC, DEVICE_PATH_SPI, + DEVICE_PATH_MMIO, /* * When adding path types to this table, please also update the @@ -36,6 +37,7 @@ enum device_path_type { "DEVICE_PATH_IOAPIC", \ "DEVICE_PATH_GENERIC", \ "DEVICE_PATH_SPI", \ + "DEVICE_PATH_MMIO", \ } struct domain_path { @@ -89,6 +91,9 @@ struct generic_path { unsigned int subid; }; +struct mmio_path { + uintptr_t addr; +}; struct device_path { enum device_path_type type; @@ -104,6 +109,7 @@ struct device_path { struct cpu_bus_path cpu_bus; struct generic_path generic; struct spi_path spi; + struct mmio_path mmio; }; }; |