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authorAaron Durbin <adurbin@chromium.org>2016-05-10 17:00:06 -0500
committerAaron Durbin <adurbin@chromium.org>2016-05-11 21:33:17 +0200
commitfbb3e6c10873d0c55dc477c436d8352b915895ef (patch)
tree4adf63e8f275064cbc58d9387e3b023bdbc7714d /src
parentbf1e48194494b52a06945490a4fbf322059e7ebd (diff)
downloadcoreboot-fbb3e6c10873d0c55dc477c436d8352b915895ef.tar.xz
ec/google/chromeec: provide way to query ioport range
In order to provide other stages access to the ioport range required by the ChromeEC provide google_chromeec_ioport_range() function to fill in the details. Currently, the ioport range is only consumed by the LPC implemenation. Also allow ec_lpc.c to be built for the bootblock stage. Change-Id: I6c181b42e80e71fe07e8fa90df783107287f16ad Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://review.coreboot.org/14769 Tested-by: build bot (Jenkins) Reviewed-by: Furquan Shaikh <furquan@google.com>
Diffstat (limited to 'src')
-rw-r--r--src/ec/google/chromeec/Makefile.inc1
-rw-r--r--src/ec/google/chromeec/ec.h3
-rw-r--r--src/ec/google/chromeec/ec_lpc.c36
3 files changed, 29 insertions, 11 deletions
diff --git a/src/ec/google/chromeec/Makefile.inc b/src/ec/google/chromeec/Makefile.inc
index 759c0da5a2..7ae1835ffc 100644
--- a/src/ec/google/chromeec/Makefile.inc
+++ b/src/ec/google/chromeec/Makefile.inc
@@ -1,5 +1,6 @@
ifeq ($(CONFIG_EC_GOOGLE_CHROMEEC),y)
+bootblock-$(CONFIG_EC_GOOGLE_CHROMEEC_LPC) += ec_lpc.c
ramstage-y += ec.c crosec_proto.c vstore.c
ramstage-$(CONFIG_EC_GOOGLE_CHROMEEC_I2C) += ec_i2c.c
ramstage-$(CONFIG_EC_GOOGLE_CHROMEEC_LPC) += ec_lpc.c
diff --git a/src/ec/google/chromeec/ec.h b/src/ec/google/chromeec/ec.h
index 85f41adf25..19507bb86f 100644
--- a/src/ec/google/chromeec/ec.h
+++ b/src/ec/google/chromeec/ec.h
@@ -21,6 +21,9 @@
#include <stdint.h>
#include "ec_commands.h"
+/* Fill in base and size of the IO port resources used. */
+void google_chromeec_ioport_range(uint16_t *base, size_t *size);
+
#ifndef __PRE_RAM__
int google_chromeec_i2c_xfer(uint8_t chip, uint8_t addr, int alen,
uint8_t *buffer, int len, int is_read);
diff --git a/src/ec/google/chromeec/ec_lpc.c b/src/ec/google/chromeec/ec_lpc.c
index f9d0f8bfc7..06b506b059 100644
--- a/src/ec/google/chromeec/ec_lpc.c
+++ b/src/ec/google/chromeec/ec_lpc.c
@@ -367,6 +367,26 @@ uint8_t google_chromeec_get_switches(void)
return read_byte(EC_LPC_ADDR_MEMMAP + EC_MEMMAP_SWITCHES);
}
+void google_chromeec_ioport_range(uint16_t *out_base, size_t *out_size)
+{
+ uint16_t base;
+ size_t size;
+
+ if (IS_ENABLED(CONFIG_EC_GOOGLE_CHROMEEC_MEC)) {
+ base = MEC_EMI_BASE;
+ size = MEC_EMI_SIZE;
+ } else {
+ base = EC_HOST_CMD_REGION0;
+ size = 2 * EC_HOST_CMD_REGION_SIZE;
+ /* Make sure MEMMAP region follows host cmd region. */
+ assert(base + size == EC_LPC_ADDR_MEMMAP);
+ size += EC_MEMMAP_SIZE;
+ }
+
+ *out_base = base;
+ *out_size = size;
+}
+
#ifdef __PRE_RAM__
int google_chromeec_command(struct chromeec_command *cec_command)
@@ -423,19 +443,13 @@ static void lpc_ec_read_resources(struct device *dev)
{
unsigned int idx = 0;
struct resource * res;
+ uint16_t base;
+ size_t size;
-
+ google_chromeec_ioport_range(&base, &size);
res = new_resource(dev, idx++);
- if (IS_ENABLED(CONFIG_EC_GOOGLE_CHROMEEC_MEC)) {
- res->base = MEC_EMI_BASE;
- res->size = MEC_EMI_SIZE;
- } else {
- res->base = EC_HOST_CMD_REGION0;
- res->size = 2 * EC_HOST_CMD_REGION_SIZE;
- /* Make sure MEMMAP region follows host cmd region. */
- assert(res->base + res->size == EC_LPC_ADDR_MEMMAP);
- res->size += EC_MEMMAP_SIZE;
- }
+ res->base = base;
+ res->size = size;
res->flags = IORESOURCE_IO | IORESOURCE_ASSIGNED | IORESOURCE_FIXED;
}