| Message ID | 20240724060224.3071065-26-sughosh.ganu@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series | Make LMB memory map global and persistent | expand |
Hi Sughosh, On Wed, 24 Jul 2024 at 00:04, Sughosh Ganu <sughosh.ganu@linaro.org> wrote: > > The TCG event log buffer is being set at the end of ram memory. This > region of memory is to be reserved as LMB_NOMAP memory in the LMB > memory map. The current location of this buffer overlaps with the > memory region reserved for the U-Boot image, which is at the top of > the usable memory. This worked earlier as the LMB memory map was not > global but caller specific, but fails now because of the overlap. Move > the TCG event log buffer to the start of the ram memory region > instead. > > Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org> > --- > Changes since rfc: New patch > > arch/sandbox/dts/test.dts | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts > index 5fb5eac862..1e1e9eaeb5 100644 > --- a/arch/sandbox/dts/test.dts > +++ b/arch/sandbox/dts/test.dts > @@ -78,7 +78,7 @@ > > event_log: tcg_event_log { > no-map; > - reg = <(CFG_SYS_SDRAM_SIZE - 0x2000) 0x2000>; > + reg = <(CFG_SYS_SDRAM_BASE + 0x1000) 0x2000>; > }; > }; > > -- > 2.34.1 > It looks like this will conflict. Please check and update the memory map at the end of doc/arch/sandbox/sandbox.rst Separate from this patch, I really think the TCG event log should go in a bloblist. I can have a crack at that if you like. Regards, Simon
On Fri, 26 Jul 2024 at 05:02, Simon Glass <sjg@chromium.org> wrote: > > Hi Sughosh, > > On Wed, 24 Jul 2024 at 00:04, Sughosh Ganu <sughosh.ganu@linaro.org> wrote: > > > > The TCG event log buffer is being set at the end of ram memory. This > > region of memory is to be reserved as LMB_NOMAP memory in the LMB > > memory map. The current location of this buffer overlaps with the > > memory region reserved for the U-Boot image, which is at the top of > > the usable memory. This worked earlier as the LMB memory map was not > > global but caller specific, but fails now because of the overlap. Move > > the TCG event log buffer to the start of the ram memory region > > instead. > > > > Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org> > > --- > > Changes since rfc: New patch > > > > arch/sandbox/dts/test.dts | 2 +- > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts > > index 5fb5eac862..1e1e9eaeb5 100644 > > --- a/arch/sandbox/dts/test.dts > > +++ b/arch/sandbox/dts/test.dts > > @@ -78,7 +78,7 @@ > > > > event_log: tcg_event_log { > > no-map; > > - reg = <(CFG_SYS_SDRAM_SIZE - 0x2000) 0x2000>; > > + reg = <(CFG_SYS_SDRAM_BASE + 0x1000) 0x2000>; > > }; > > }; > > > > -- > > 2.34.1 > > > > It looks like this will conflict. Can you please elaborate a bit here. I am not saying that I am not open to a different solution, but I did not get any CI errors with this change. > > Please check and update the memory map at the end of > doc/arch/sandbox/sandbox.rst > > Separate from this patch, I really think the TCG event log should go > in a bloblist. I can have a crack at that if you like. That can be taken up as a separate activity. -sughosh > > Regards, > Simon
Hi Sughosh, On Mon, 29 Jul 2024 at 02:45, Sughosh Ganu <sughosh.ganu@linaro.org> wrote: > > On Fri, 26 Jul 2024 at 05:02, Simon Glass <sjg@chromium.org> wrote: > > > > Hi Sughosh, > > > > On Wed, 24 Jul 2024 at 00:04, Sughosh Ganu <sughosh.ganu@linaro.org> wrote: > > > > > > The TCG event log buffer is being set at the end of ram memory. This > > > region of memory is to be reserved as LMB_NOMAP memory in the LMB > > > memory map. The current location of this buffer overlaps with the > > > memory region reserved for the U-Boot image, which is at the top of > > > the usable memory. This worked earlier as the LMB memory map was not > > > global but caller specific, but fails now because of the overlap. Move > > > the TCG event log buffer to the start of the ram memory region > > > instead. > > > > > > Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org> > > > --- > > > Changes since rfc: New patch > > > > > > arch/sandbox/dts/test.dts | 2 +- > > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > > > diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts > > > index 5fb5eac862..1e1e9eaeb5 100644 > > > --- a/arch/sandbox/dts/test.dts > > > +++ b/arch/sandbox/dts/test.dts > > > @@ -78,7 +78,7 @@ > > > > > > event_log: tcg_event_log { > > > no-map; > > > - reg = <(CFG_SYS_SDRAM_SIZE - 0x2000) 0x2000>; > > > + reg = <(CFG_SYS_SDRAM_BASE + 0x1000) 0x2000>; > > > }; > > > }; > > > > > > -- > > > 2.34.1 > > > > > > > It looks like this will conflict. > > Can you please elaborate a bit here. I am not saying that I am not > open to a different solution, but I did not get any CI errors with > this change. > > > > > Please check and update the memory map at the end of > > doc/arch/sandbox/sandbox.rst The address you are choosing is too low in memory...move it above the FDT and bloblist. > > > > Separate from this patch, I really think the TCG event log should go > > in a bloblist. I can have a crack at that if you like. > > That can be taken up as a separate activity. Regards, Simon
diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts index 5fb5eac862..1e1e9eaeb5 100644 --- a/arch/sandbox/dts/test.dts +++ b/arch/sandbox/dts/test.dts @@ -78,7 +78,7 @@ event_log: tcg_event_log { no-map; - reg = <(CFG_SYS_SDRAM_SIZE - 0x2000) 0x2000>; + reg = <(CFG_SYS_SDRAM_BASE + 0x1000) 0x2000>; }; };
The TCG event log buffer is being set at the end of ram memory. This region of memory is to be reserved as LMB_NOMAP memory in the LMB memory map. The current location of this buffer overlaps with the memory region reserved for the U-Boot image, which is at the top of the usable memory. This worked earlier as the LMB memory map was not global but caller specific, but fails now because of the overlap. Move the TCG event log buffer to the start of the ram memory region instead. Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org> --- Changes since rfc: New patch arch/sandbox/dts/test.dts | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)