* [PATCH v4 1/3] fdtdec: optionally add property no-map to created reserved memory node
@ 2020-09-10 8:49 Patrice Chotard
2020-09-10 8:50 ` [PATCH v4 2/3] test: fdtdec: Add test for new no-map fdtdec_add_reserved_memory() parameter Patrice Chotard
` (5 more replies)
0 siblings, 6 replies; 7+ messages in thread
From: Patrice Chotard @ 2020-09-10 8:49 UTC (permalink / raw)
To: u-boot
From: Etienne Carriere <etienne.carriere@st.com>
Add boolean input argument @no_map to helper function
fdtdec_add_reserved_memory() to add or not "no-map" property
for an added reserved memory node.
Property no-map is used by the Linux kernel to not not map memory
in its static memory mapping. It is needed for example for the|
consistency of system non-cached memory and to prevent speculative
accesses to some firewalled memory.
No functional change. A later change will update to OPTEE library to
add no-map property to OP-TEE reserved memory nodes.
Signed-off-by: Etienne Carriere <etienne.carriere@st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
---
Changes in v4:
- Reword commit message
Changes in v2:
- fix dm fdtdec test and arch/riscv/lib/fdt_fixup.c with
fdtdec_add_reserved_memory() new parameter
arch/riscv/lib/fdt_fixup.c | 2 +-
include/fdtdec.h | 5 +++--
lib/fdtdec.c | 10 ++++++++--
lib/optee/optee.c | 2 +-
test/dm/fdtdec.c | 6 +++---
5 files changed, 16 insertions(+), 9 deletions(-)
diff --git a/arch/riscv/lib/fdt_fixup.c b/arch/riscv/lib/fdt_fixup.c
index 5b2420243f..d02062fd5b 100644
--- a/arch/riscv/lib/fdt_fixup.c
+++ b/arch/riscv/lib/fdt_fixup.c
@@ -75,7 +75,7 @@ int riscv_fdt_copy_resv_mem_node(const void *src, void *dst)
pmp_mem.start = addr;
pmp_mem.end = addr + size - 1;
err = fdtdec_add_reserved_memory(dst, basename, &pmp_mem,
- &phandle);
+ &phandle, false);
if (err < 0 && err != -FDT_ERR_EXISTS) {
log_err("failed to add reserved memory: %d\n", err);
return err;
diff --git a/include/fdtdec.h b/include/fdtdec.h
index 152eb07b9e..62d1660973 100644
--- a/include/fdtdec.h
+++ b/include/fdtdec.h
@@ -1029,7 +1029,7 @@ static inline int fdtdec_set_phandle(void *blob, int node, uint32_t phandle)
* };
* uint32_t phandle;
*
- * fdtdec_add_reserved_memory(fdt, "framebuffer", &fb, &phandle);
+ * fdtdec_add_reserved_memory(fdt, "framebuffer", &fb, &phandle, false);
*
* This results in the following subnode being added to the top-level
* /reserved-memory node:
@@ -1056,11 +1056,12 @@ static inline int fdtdec_set_phandle(void *blob, int node, uint32_t phandle)
* @param carveout information about the carveout region
* @param phandlep return location for the phandle of the carveout region
* can be NULL if no phandle should be added
+ * @param no_map add "no-map" property if true
* @return 0 on success or a negative error code on failure
*/
int fdtdec_add_reserved_memory(void *blob, const char *basename,
const struct fdt_memory *carveout,
- uint32_t *phandlep);
+ uint32_t *phandlep, bool no_map);
/**
* fdtdec_get_carveout() - reads a carveout from an FDT
diff --git a/lib/fdtdec.c b/lib/fdtdec.c
index d3b22ec323..b3cbe1223e 100644
--- a/lib/fdtdec.c
+++ b/lib/fdtdec.c
@@ -1319,7 +1319,7 @@ static int fdtdec_init_reserved_memory(void *blob)
int fdtdec_add_reserved_memory(void *blob, const char *basename,
const struct fdt_memory *carveout,
- uint32_t *phandlep)
+ uint32_t *phandlep, bool no_map)
{
fdt32_t cells[4] = {}, *ptr = cells;
uint32_t upper, lower, phandle;
@@ -1419,6 +1419,12 @@ int fdtdec_add_reserved_memory(void *blob, const char *basename,
if (err < 0)
return err;
+ if (no_map) {
+ err = fdt_setprop(blob, node, "no-map", NULL, 0);
+ if (err < 0)
+ return err;
+ }
+
/* return the phandle for the new node for the caller to use */
if (phandlep)
*phandlep = phandle;
@@ -1484,7 +1490,7 @@ int fdtdec_set_carveout(void *blob, const char *node, const char *prop_name,
fdt32_t value;
void *prop;
- err = fdtdec_add_reserved_memory(blob, name, carveout, &phandle);
+ err = fdtdec_add_reserved_memory(blob, name, carveout, &phandle, false);
if (err < 0) {
debug("failed to add reserved memory: %d\n", err);
return err;
diff --git a/lib/optee/optee.c b/lib/optee/optee.c
index 457d4cca8a..963c2ff430 100644
--- a/lib/optee/optee.c
+++ b/lib/optee/optee.c
@@ -192,7 +192,7 @@ int optee_copy_fdt_nodes(const void *old_blob, void *new_blob)
ret = fdtdec_add_reserved_memory(new_blob,
nodename,
&carveout,
- NULL);
+ NULL, false);
free(oldname);
if (ret < 0)
diff --git a/test/dm/fdtdec.c b/test/dm/fdtdec.c
index 716993f706..4119003041 100644
--- a/test/dm/fdtdec.c
+++ b/test/dm/fdtdec.c
@@ -80,7 +80,7 @@ static int dm_test_fdtdec_add_reserved_memory(struct unit_test_state *uts)
resv.start = 0x1000;
resv.end = 0x1fff;
ut_assertok(fdtdec_add_reserved_memory(blob, "rsvd_region",
- &resv, &phandle));
+ &resv, &phandle, false));
/* Test /reserve-memory and its subnode should exist */
parent = fdt_path_offset(blob, "/reserved-memory");
@@ -101,7 +101,7 @@ static int dm_test_fdtdec_add_reserved_memory(struct unit_test_state *uts)
resv.start = 0x2000;
resv.end = 0x2fff;
ut_assertok(fdtdec_add_reserved_memory(blob, "rsvd_region1",
- &resv, &phandle1));
+ &resv, &phandle1, false));
subnode = fdt_path_offset(blob, "/reserved-memory/rsvd_region1");
ut_assert(subnode > 0);
@@ -115,7 +115,7 @@ static int dm_test_fdtdec_add_reserved_memory(struct unit_test_state *uts)
resv.start = 0x1000;
resv.end = 0x1fff;
ut_assertok(fdtdec_add_reserved_memory(blob, "rsvd_region2",
- &resv, &phandle1));
+ &resv, &phandle1, false));
subnode = fdt_path_offset(blob, "/reserved-memory/rsvd_region2");
ut_assert(subnode < 0);
--
2.17.1
^ permalink raw reply related [flat|nested] 7+ messages in thread
* [PATCH v4 2/3] test: fdtdec: Add test for new no-map fdtdec_add_reserved_memory() parameter
2020-09-10 8:49 [PATCH v4 1/3] fdtdec: optionally add property no-map to created reserved memory node Patrice Chotard
@ 2020-09-10 8:50 ` Patrice Chotard
2020-09-10 8:50 ` [PATCH v4 3/3] optee: add property no-map to secure reserved memory Patrice Chotard
` (4 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: Patrice Chotard @ 2020-09-10 8:50 UTC (permalink / raw)
To: u-boot
Add a test to verify that the no-map property is added in reserved-memory
node when fdtdec_add_reserved_memory() no-map parameter is set to true.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
---
(no changes since v2)
Changes in v2:
- Add no-map property test into fdtdec test
test/dm/fdtdec.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/test/dm/fdtdec.c b/test/dm/fdtdec.c
index 4119003041..017157a2ec 100644
--- a/test/dm/fdtdec.c
+++ b/test/dm/fdtdec.c
@@ -101,10 +101,13 @@ static int dm_test_fdtdec_add_reserved_memory(struct unit_test_state *uts)
resv.start = 0x2000;
resv.end = 0x2fff;
ut_assertok(fdtdec_add_reserved_memory(blob, "rsvd_region1",
- &resv, &phandle1, false));
+ &resv, &phandle1, true));
subnode = fdt_path_offset(blob, "/reserved-memory/rsvd_region1");
ut_assert(subnode > 0);
+ /* check that no-map property is present */
+ ut_assert(fdt_getprop(blob, subnode, "no-map", NULL) > 0);
+
/* phandles must be different */
ut_assert(phandle != phandle1);
--
2.17.1
^ permalink raw reply related [flat|nested] 7+ messages in thread
* [PATCH v4 3/3] optee: add property no-map to secure reserved memory
2020-09-10 8:49 [PATCH v4 1/3] fdtdec: optionally add property no-map to created reserved memory node Patrice Chotard
2020-09-10 8:50 ` [PATCH v4 2/3] test: fdtdec: Add test for new no-map fdtdec_add_reserved_memory() parameter Patrice Chotard
@ 2020-09-10 8:50 ` Patrice Chotard
2020-09-17 1:09 ` [PATCH v4 1/3] fdtdec: optionally add property no-map to created reserved memory node Simon Glass
` (3 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: Patrice Chotard @ 2020-09-10 8:50 UTC (permalink / raw)
To: u-boot
From: Etienne Carriere <etienne.carriere@st.com>
OP-TEE reserved memory node must set property "no-map" to prevent
Linux kernel from mapping secure memory unless what non-secure world
speculative accesses of the CPU can violate the memory firmware
configuration.
Fixes: 6ccb05eae01b ("image: fdt: copy possible optee nodes to a loaded devicetree")
Signed-off-by: Etienne Carriere <etienne.carriere@st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
---
(no changes since v3)
Changes in v3:
- Fix changelogs
lib/optee/optee.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/optee/optee.c b/lib/optee/optee.c
index 963c2ff430..9e6606568f 100644
--- a/lib/optee/optee.c
+++ b/lib/optee/optee.c
@@ -192,7 +192,7 @@ int optee_copy_fdt_nodes(const void *old_blob, void *new_blob)
ret = fdtdec_add_reserved_memory(new_blob,
nodename,
&carveout,
- NULL, false);
+ NULL, true);
free(oldname);
if (ret < 0)
--
2.17.1
^ permalink raw reply related [flat|nested] 7+ messages in thread
* [PATCH v4 1/3] fdtdec: optionally add property no-map to created reserved memory node
2020-09-10 8:49 [PATCH v4 1/3] fdtdec: optionally add property no-map to created reserved memory node Patrice Chotard
2020-09-10 8:50 ` [PATCH v4 2/3] test: fdtdec: Add test for new no-map fdtdec_add_reserved_memory() parameter Patrice Chotard
2020-09-10 8:50 ` [PATCH v4 3/3] optee: add property no-map to secure reserved memory Patrice Chotard
@ 2020-09-17 1:09 ` Simon Glass
2020-09-27 1:59 ` [PATCH v4 3/3] optee: add property no-map to secure reserved memory Simon Glass
` (2 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: Simon Glass @ 2020-09-17 1:09 UTC (permalink / raw)
To: u-boot
On Thu, 10 Sep 2020 at 02:50, Patrice Chotard <patrice.chotard@st.com> wrote:
>
> From: Etienne Carriere <etienne.carriere@st.com>
>
> Add boolean input argument @no_map to helper function
> fdtdec_add_reserved_memory() to add or not "no-map" property
> for an added reserved memory node.
>
> Property no-map is used by the Linux kernel to not not map memory
> in its static memory mapping. It is needed for example for the|
> consistency of system non-cached memory and to prevent speculative
> accesses to some firewalled memory.
>
> No functional change. A later change will update to OPTEE library to
> add no-map property to OP-TEE reserved memory nodes.
>
> Signed-off-by: Etienne Carriere <etienne.carriere@st.com>
> Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
> ---
>
> Changes in v4:
> - Reword commit message
>
> Changes in v2:
> - fix dm fdtdec test and arch/riscv/lib/fdt_fixup.c with
> fdtdec_add_reserved_memory() new parameter
>
> arch/riscv/lib/fdt_fixup.c | 2 +-
> include/fdtdec.h | 5 +++--
> lib/fdtdec.c | 10 ++++++++--
> lib/optee/optee.c | 2 +-
> test/dm/fdtdec.c | 6 +++---
> 5 files changed, 16 insertions(+), 9 deletions(-)
Reviewed-by: Simon Glass <sjg@chromium.org>
^ permalink raw reply [flat|nested] 7+ messages in thread
* [PATCH v4 3/3] optee: add property no-map to secure reserved memory
2020-09-10 8:49 [PATCH v4 1/3] fdtdec: optionally add property no-map to created reserved memory node Patrice Chotard
` (2 preceding siblings ...)
2020-09-17 1:09 ` [PATCH v4 1/3] fdtdec: optionally add property no-map to created reserved memory node Simon Glass
@ 2020-09-27 1:59 ` Simon Glass
2020-09-27 1:59 ` [PATCH v4 2/3] test: fdtdec: Add test for new no-map fdtdec_add_reserved_memory() parameter Simon Glass
2020-09-27 1:59 ` [PATCH v4 1/3] fdtdec: optionally add property no-map to created reserved memory node Simon Glass
5 siblings, 0 replies; 7+ messages in thread
From: Simon Glass @ 2020-09-27 1:59 UTC (permalink / raw)
To: u-boot
From: Etienne Carriere <etienne.carriere@st.com>
OP-TEE reserved memory node must set property "no-map" to prevent
Linux kernel from mapping secure memory unless what non-secure world
speculative accesses of the CPU can violate the memory firmware
configuration.
Fixes: 6ccb05eae01b ("image: fdt: copy possible optee nodes to a
loaded devicetree")
Signed-off-by: Etienne Carriere <etienne.carriere@st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
---
(no changes since v3)
Changes in v3:
- Fix changelogs
lib/optee/optee.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Applied to u-boot-dm/next, thanks!
^ permalink raw reply [flat|nested] 7+ messages in thread
* [PATCH v4 2/3] test: fdtdec: Add test for new no-map fdtdec_add_reserved_memory() parameter
2020-09-10 8:49 [PATCH v4 1/3] fdtdec: optionally add property no-map to created reserved memory node Patrice Chotard
` (3 preceding siblings ...)
2020-09-27 1:59 ` [PATCH v4 3/3] optee: add property no-map to secure reserved memory Simon Glass
@ 2020-09-27 1:59 ` Simon Glass
2020-09-27 1:59 ` [PATCH v4 1/3] fdtdec: optionally add property no-map to created reserved memory node Simon Glass
5 siblings, 0 replies; 7+ messages in thread
From: Simon Glass @ 2020-09-27 1:59 UTC (permalink / raw)
To: u-boot
Add a test to verify that the no-map property is added in reserved-memory
node when fdtdec_add_reserved_memory() no-map parameter is set to true.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
---
(no changes since v2)
Changes in v2:
- Add no-map property test into fdtdec test
test/dm/fdtdec.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
Applied to u-boot-dm/next, thanks!
^ permalink raw reply [flat|nested] 7+ messages in thread
* [PATCH v4 1/3] fdtdec: optionally add property no-map to created reserved memory node
2020-09-10 8:49 [PATCH v4 1/3] fdtdec: optionally add property no-map to created reserved memory node Patrice Chotard
` (4 preceding siblings ...)
2020-09-27 1:59 ` [PATCH v4 2/3] test: fdtdec: Add test for new no-map fdtdec_add_reserved_memory() parameter Simon Glass
@ 2020-09-27 1:59 ` Simon Glass
5 siblings, 0 replies; 7+ messages in thread
From: Simon Glass @ 2020-09-27 1:59 UTC (permalink / raw)
To: u-boot
On Thu, 10 Sep 2020 at 02:50, Patrice Chotard <patrice.chotard@st.com> wrote:
>
> From: Etienne Carriere <etienne.carriere@st.com>
>
> Add boolean input argument @no_map to helper function
> fdtdec_add_reserved_memory() to add or not "no-map" property
> for an added reserved memory node.
>
> Property no-map is used by the Linux kernel to not not map memory
> in its static memory mapping. It is needed for example for the|
> consistency of system non-cached memory and to prevent speculative
> accesses to some firewalled memory.
>
> No functional change. A later change will update to OPTEE library to
> add no-map property to OP-TEE reserved memory nodes.
>
> Signed-off-by: Etienne Carriere <etienne.carriere@st.com>
> Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
> ---
>
> Changes in v4:
> - Reword commit message
>
> Changes in v2:
> - fix dm fdtdec test and arch/riscv/lib/fdt_fixup.c with
> fdtdec_add_reserved_memory() new parameter
>
> arch/riscv/lib/fdt_fixup.c | 2 +-
> include/fdtdec.h | 5 +++--
> lib/fdtdec.c | 10 ++++++++--
> lib/optee/optee.c | 2 +-
> test/dm/fdtdec.c | 6 +++---
> 5 files changed, 16 insertions(+), 9 deletions(-)
Reviewed-by: Simon Glass <sjg@chromium.org>
Applied to u-boot-dm/next, thanks!
^ permalink raw reply [flat|nested] 7+ messages in thread
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2020-09-10 8:49 [PATCH v4 1/3] fdtdec: optionally add property no-map to created reserved memory node Patrice Chotard
2020-09-10 8:50 ` [PATCH v4 2/3] test: fdtdec: Add test for new no-map fdtdec_add_reserved_memory() parameter Patrice Chotard
2020-09-10 8:50 ` [PATCH v4 3/3] optee: add property no-map to secure reserved memory Patrice Chotard
2020-09-17 1:09 ` [PATCH v4 1/3] fdtdec: optionally add property no-map to created reserved memory node Simon Glass
2020-09-27 1:59 ` [PATCH v4 3/3] optee: add property no-map to secure reserved memory Simon Glass
2020-09-27 1:59 ` [PATCH v4 2/3] test: fdtdec: Add test for new no-map fdtdec_add_reserved_memory() parameter Simon Glass
2020-09-27 1:59 ` [PATCH v4 1/3] fdtdec: optionally add property no-map to created reserved memory node Simon Glass
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