Aaron Durbin (adurbin(a)google.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/9128
-gerrit
commit ddb515ec59ddb15b355ebb2618676b3a4115315d
Author: Aaron Durbin <adurbin(a)chromium.org>
Date: Thu Mar 26 14:39:07 2015 -0500
coreboot: add region infrastructure
The region infrastructure provides a means of abstracting
access to different types of storage such as SPI flash, MMC,
or just plain memory. The regions are represented by
region devices which can be chained together forming subregions
of the larger region.
Change-Id: I803f97567ef0505691a69975c282fde1215ea6da
Signed-off-by: Aaron Durbin <adurbin(a)chromium.org>
---
src/include/region.h | 100 ++++++++++++++++++++++++++++++++++++++++++
src/lib/Makefile.inc | 4 ++
src/lib/region.c | 121 +++++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 225 insertions(+)
diff --git a/src/include/region.h b/src/include/region.h
new file mode 100644
index 0000000..4f8cda1
--- /dev/null
+++ b/src/include/region.h
@@ -0,0 +1,100 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2015 Google Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef _REGION_H_
+#define _REGION_H_
+
+#include <stdint.h>
+#include <stddef.h>
+
+/*
+ * Region support.
+ *
+ * Regions are intended to abstract away the access mechanisms for blocks of
+ * data. This could be SPI, eMMC, or a memory region as the backing store.
+ * They are accessed through a region_device. Subregions can be made by
+ * chaining together multiple region_devices.
+ */
+
+struct region_device;
+
+/*
+ * Returns NULL on error otherwise a buffer is returned with the conents of
+ * the requested data at offset of size.
+ */
+void *rdev_mmap(const struct region_device *rd, size_t offset, size_t size);
+
+/* Unmap a previously mapped area. Returns 0 on success, < 0 on error. */
+int rdev_munmap(const struct region_device *rd, void *mapping);
+
+/*
+ * Returns < 0 on error otherwise returns size of data read at provided
+ * offset filling in the buffer passed.
+ */
+ssize_t rdev_readat(const struct region_device *rd, void *b, size_t offset,
+ size_t size);
+
+
+/****************************************
+ * Implementation of a region device *
+ ****************************************/
+
+/*
+ * Create a child region of the parent provided the sub-region is within
+ * the parent's region. Returns < 0 on error otherwise 0 on success. Note
+ * that the child device only calls through the parent's operations.
+ */
+int rdev_chain(struct region_device *child, const struct region_device *parent,
+ size_t offset, size_t size);
+
+
+/* A region_device operations. */
+struct region_device_ops {
+ void *(*mmap)(const struct region_device *, size_t, size_t);
+ int (*munmap)(const struct region_device *, void *);
+ ssize_t (*readat)(const struct region_device *, void *, size_t, size_t);
+};
+
+struct region {
+ size_t offset;
+ size_t size;
+};
+
+struct region_device {
+ const struct region_device *root;
+ const struct region_device_ops *ops;
+ struct region region;
+};
+
+#define REGION_DEV_INIT(ops_, offset_, size_) \
+ { \
+ .root = NULL, \
+ .ops = (ops_), \
+ .region = { \
+ .offset = (offset_), \
+ .size = (size_), \
+ }, \
+ }
+
+static inline size_t region_sz(const struct region *r)
+{
+ return r->size;
+}
+
+#endif /* _REGION_H_ */
diff --git a/src/lib/Makefile.inc b/src/lib/Makefile.inc
index 7b8b5fe..4729dde 100644
--- a/src/lib/Makefile.inc
+++ b/src/lib/Makefile.inc
@@ -25,11 +25,13 @@ bootblock-$(CONFIG_COMMON_CBFS_SPI_WRAPPER) += cbfs_spi.c
bootblock-$(CONFIG_CONSOLE_CBMEM) += cbmem_console.c
bootblock-y += memchr.c
bootblock-y += memcmp.c
+bootblock-y += region.c
verstage-y += prog_ops.c
verstage-y += delay.c
verstage-y += cbfs_core.c
verstage-y += memcmp.c
+verstage-y += region.c
verstage-$(CONFIG_CONSOLE_CBMEM) += cbmem_console.c
verstage-$(CONFIG_COMMON_CBFS_SPI_WRAPPER) += cbfs_spi.c
verstage-y += tlcl.c
@@ -114,6 +116,8 @@ ramstage-y += cbmem_stage_cache.c
romstage-y += cbmem_stage_cache.c
endif
+romstage-y += region.c
+ramstage-y += region.c
smm-y += memcmp.c
smm-$(CONFIG_COMPILER_GCC) += gcc.c
diff --git a/src/lib/region.c b/src/lib/region.c
new file mode 100644
index 0000000..cf74784
--- /dev/null
+++ b/src/lib/region.c
@@ -0,0 +1,121 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2015 Google Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <region.h>
+#include <string.h>
+
+static inline size_t region_offset(const struct region *r)
+{
+ return r->offset;
+}
+
+static inline size_t region_end(const struct region *r)
+{
+ return region_sz(r) + region_offset(r);
+}
+
+static int is_subregion(const struct region *p, const struct region *c)
+{
+ if (region_offset(c) < region_offset(p))
+ return 0;
+
+ if (region_sz(c) > region_sz(p))
+ return 0;
+
+ if (region_end(c) > region_end(p))
+ return 0;
+
+ return 1;
+}
+
+static int normalize_and_ok(const struct region *outer, struct region *inner)
+{
+ inner->offset += region_offset(outer);
+ return is_subregion(outer, inner);
+}
+
+static const struct region_device *rdev_root(const struct region_device *rdev)
+{
+ if (rdev->root == NULL)
+ return rdev;
+ return rdev->root;
+}
+
+void *rdev_mmap(const struct region_device *rd, size_t offset, size_t size)
+{
+ const struct region_device *rdev;
+ struct region req = {
+ .offset = offset,
+ .size = size,
+ };
+
+ if (!normalize_and_ok(&rd->region, &req))
+ return NULL;
+
+ rdev = rdev_root(rd);
+
+ return rdev->ops->mmap(rdev, req.offset, req.size);
+}
+
+int rdev_munmap(const struct region_device *rd, void *mapping)
+{
+ const struct region_device *rdev;
+
+ rdev = rdev_root(rd);
+
+ return rdev->ops->munmap(rdev, mapping);
+}
+
+ssize_t rdev_readat(const struct region_device *rd, void *b, size_t offset,
+ size_t size)
+{
+ const struct region_device *rdev;
+ struct region req = {
+ .offset = offset,
+ .size = size,
+ };
+
+ if (!normalize_and_ok(&rd->region, &req))
+ return -1;
+
+ rdev = rdev_root(rd);
+
+ return rdev->ops->readat(rdev, b, req.offset, req.size);
+}
+
+int rdev_chain(struct region_device *child, const struct region_device *parent,
+ size_t offset, size_t size)
+{
+ struct region req = {
+ .offset = offset,
+ .size = size,
+ };
+
+ if (!normalize_and_ok(&parent->region, &req))
+ return -1;
+
+ /* Keep track of root region device. Note the offsets are relative
+ * to the root device. */
+ child->root = rdev_root(parent);
+ child->ops = NULL;
+ child->region.offset = req.offset;
+ child->region.size = req.size;
+
+ return 0;
+}
Aaron Durbin (adurbin(a)google.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/9129
-gerrit
commit 582bb8a19e8afd6eb04db417c6983a8a470ecb67
Author: Aaron Durbin <adurbin(a)chromium.org>
Date: Thu Mar 26 12:29:12 2015 -0500
coreboot: add memory pool infrastructure
The memory pool infrastructure provides an allocator with
very simple free()ing semantics: only the most recent allocation
can be free from the pool. However, it can be reset and when
not used any longer.
Change-Id: I5ae9ab35bb769d78bbc2866c5ae3b5ce2cdce5fa
Signed-off-by: Aaron Durbin <adurbin(a)chromium.org>
---
src/include/mem_pool.h | 73 ++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/Makefile.inc | 5 ++++
src/lib/mem_pool.c | 51 +++++++++++++++++++++++++++++++++++
3 files changed, 129 insertions(+)
diff --git a/src/include/mem_pool.h b/src/include/mem_pool.h
new file mode 100644
index 0000000..ca01fcb
--- /dev/null
+++ b/src/include/mem_pool.h
@@ -0,0 +1,73 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2015 Google Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef _MEM_POOL_H_
+#define _MEM_POOL_H_
+
+#include <stddef.h>
+#include <stdint.h>
+
+/*
+ * The memory pool allows one to allocate memory from a fixed size buffer
+ * that also allows freeing semantics for reuse. However, the current
+ * limitation is that the most recent allocation is the only one that
+ * can be freed. If one tries to free any allocation that isn't the
+ * most recently allocated it will result in a leak within the memory pool.
+ *
+ * The memory returned by allocations are at least 8 byte aligned. Note
+ * that this requires the backing buffer to start on at least an 8 byte
+ * alignment.
+ */
+
+struct mem_pool {
+ uint8_t *buf;
+ size_t size;
+ uint8_t *last_alloc;
+ size_t free_offset;
+};
+
+#define MEM_POOL_INIT(buf_, size_) \
+ { \
+ .buf = (buf_), \
+ .size = (size_), \
+ .last_alloc = NULL, \
+ .free_offset = 0, \
+ }
+
+static inline void mem_pool_reset(struct mem_pool *mp)
+{
+ mp->last_alloc = NULL;
+ mp->free_offset = 0;
+}
+
+/* Initialize a memory pool. */
+static inline void mem_pool_init(struct mem_pool *mp, void *buf, size_t sz)
+{
+ mp->buf = buf;
+ mp->size = sz;
+ mem_pool_reset(mp);
+}
+
+/* Allocate requested size from the memory pool. NULL returned on error. */
+void *mem_pool_alloc(struct mem_pool *mp, size_t sz);
+
+/* Free allocation from memory pool. */
+void mem_pool_free(struct mem_pool *mp, void *alloc);
+
+#endif /* _MEM_POOL_H_ */
diff --git a/src/lib/Makefile.inc b/src/lib/Makefile.inc
index 4729dde..8ed3786 100644
--- a/src/lib/Makefile.inc
+++ b/src/lib/Makefile.inc
@@ -25,6 +25,7 @@ bootblock-$(CONFIG_COMMON_CBFS_SPI_WRAPPER) += cbfs_spi.c
bootblock-$(CONFIG_CONSOLE_CBMEM) += cbmem_console.c
bootblock-y += memchr.c
bootblock-y += memcmp.c
+bootblock-y += mem_pool.c
bootblock-y += region.c
verstage-y += prog_ops.c
@@ -36,6 +37,7 @@ verstage-$(CONFIG_CONSOLE_CBMEM) += cbmem_console.c
verstage-$(CONFIG_COMMON_CBFS_SPI_WRAPPER) += cbfs_spi.c
verstage-y += tlcl.c
verstage-$(CONFIG_GENERIC_UDELAY) += timer.c
+verstage-y += mem_pool.c
romstage-y += prog_ops.c
romstage-y += memchr.c
@@ -116,6 +118,9 @@ ramstage-y += cbmem_stage_cache.c
romstage-y += cbmem_stage_cache.c
endif
+romstage-y += mem_pool.c
+ramstage-y += mem_pool.c
+
romstage-y += region.c
ramstage-y += region.c
diff --git a/src/lib/mem_pool.c b/src/lib/mem_pool.c
new file mode 100644
index 0000000..b3b2f5e
--- /dev/null
+++ b/src/lib/mem_pool.c
@@ -0,0 +1,51 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2015 Google Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <mem_pool.h>
+#include <stdlib.h>
+
+void *mem_pool_alloc(struct mem_pool *mp, size_t sz)
+{
+ void *p;
+
+ /* Make all allocations be at least 8 byte aligned. */
+ sz = ALIGN_UP(sz, 8);
+
+ /* Determine if any space available. */
+ if ((mp->size - mp->free_offset) < sz)
+ return NULL;
+
+ p = &mp->buf[mp->free_offset];
+
+ mp->free_offset += sz;
+ mp->last_alloc = p;
+
+ return p;
+}
+
+void mem_pool_free(struct mem_pool *mp, void *p)
+{
+ /* Determine if p was the most recent allocation. */
+ if (p == NULL || mp->last_alloc != p)
+ return;
+
+ mp->free_offset = mp->last_alloc - mp->buf;
+ /* No way to track allocation before this one. */
+ mp->last_alloc = NULL;
+}
Aaron Durbin (adurbin(a)google.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/9130
-gerrit
commit b712b9a4a5600d0766c94155e488c274cd2a2950
Author: Aaron Durbin <adurbin(a)chromium.org>
Date: Thu Mar 26 14:55:34 2015 -0500
x86: set smbios rom size based on CONFIG_ROM_SIZE
Instead of relying on the CBFS header's romsize field use
the CONFIG_ROM_SIZE Kconfig variable. That value is what is
used to create the rom file as it is. Therefore, just remove
the dependency.
Change-Id: If855d7378df20080061e27e4988e96aee233d1e0
Signed-off-by: Aaron Durbin <adurbin(a)chromium.org>
---
src/arch/x86/boot/smbios.c | 10 +---------
1 file changed, 1 insertion(+), 9 deletions(-)
diff --git a/src/arch/x86/boot/smbios.c b/src/arch/x86/boot/smbios.c
index 16e2531..74b6ed9 100644
--- a/src/arch/x86/boot/smbios.c
+++ b/src/arch/x86/boot/smbios.c
@@ -27,7 +27,6 @@
#include <device/device.h>
#include <arch/cpu.h>
#include <cpu/x86/name.h>
-#include <cbfs_core.h>
#include <arch/byteorder.h>
#include <elog.h>
#include <memory_info.h>
@@ -245,14 +244,7 @@ static int smbios_write_type0(unsigned long *current, int handle)
vboot_data->vbt10 = (u32)t->eos + (version_offset - 1);
#endif
- {
- const struct cbfs_header *header;
- u32 romsize = CONFIG_ROM_SIZE;
- header = cbfs_get_header(CBFS_DEFAULT_MEDIA);
- if (header != CBFS_HEADER_INVALID_ADDRESS)
- romsize = ntohl(header->romsize);
- t->bios_rom_size = (romsize / 65535) - 1;
- }
+ t->bios_rom_size = (CONFIG_ROM_SIZE / 65535) - 1;
t->system_bios_major_release = 4;
t->bios_characteristics =
the following patch was just integrated into master:
commit 910a00dc30c28a667e7064961107ff4483d739e1
Author: Aaron Durbin <adurbin(a)chromium.org>
Date: Sat Mar 28 10:35:29 2015 -0500
mips: fix API expectations that break builds
Add the approrpiate car* empty implementations as well as types
included within the rest of coreboot to start building correctly.
Change-Id: Ifaf10281f9a9e28f518f4694630cbffa3f8d187d
Signed-off-by: Aaron Durbin <adurbin(a)chromium.org>
Reviewed-on: http://review.coreboot.org/9150
Reviewed-by: Patrick Georgi <pgeorgi(a)google.com>
Tested-by: Aaron Durbin <adurbin(a)google.com>
See http://review.coreboot.org/9150 for details.
-gerrit