hw/arm/fsl-imx7.c | 11 +++++++++++ include/hw/arm/fsl-imx7.h | 6 ++++++ 2 files changed, 17 insertions(+)
Instantiating apbh_dma and ocotp as unimplemented devices prevents crashes
when booting Linux.
apbh_dma:
[ 14.046518] Unhandled fault: external abort on non-linefetch (0x808) at 0xd0852008
[ 14.047287] pgd = (ptrval)
[ 14.047607] [d0852008] *pgd=8b028811, *pte=33000653, *ppte=33000453
[ 14.050074] Internal error: : 808 [#1] SMP ARM
...
[ 14.077029] [<c0856530>] (stmp_clear_poll_bit) from [<c0856580>] (stmp_reset_block+0x10/0xb8)
[ 14.077642] [<c0856580>] (stmp_reset_block) from [<c1a9655c>] (mxs_dma_probe+0x1f4/0x370)
[ 14.078158] [<c1a9655c>] (mxs_dma_probe) from [<c0b6a7e8>] (platform_drv_probe+0x48/0x98)
[ 14.078641] [<c0b6a7e8>] (platform_drv_probe) from [<c0b685c4>] (really_probe+0x228/0x2d0)
ocotp:
[ 71.286109] Unhandled fault: external abort on non-linefetch (0x008) at 0xd0ff0000
[ 71.287891] pgd = (ptrval)
[ 71.288449] [d0ff0000] *pgd=8b497811, *pte=30350653, *ppte=30350453
[ 71.291389] Internal error: : 8 [#1] SMP ARM
[ 71.292302] Modules linked in:
[ 71.293583] CPU: 0 PID: 112 Comm: kworker/0:3 Not tainted 5.0.0-10153-g065b6c4c913d-dirty #2
[ 71.294148] Hardware name: Freescale i.MX7 Dual (Device Tree)
[ 71.296728] Workqueue: events deferred_probe_work_func
[ 71.297740] PC is at imx_ocotp_read+0x68/0x180
[ 71.298154] LR is at mark_held_locks+0x48/0x74
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
---
hw/arm/fsl-imx7.c | 11 +++++++++++
include/hw/arm/fsl-imx7.h | 6 ++++++
2 files changed, 17 insertions(+)
diff --git a/hw/arm/fsl-imx7.c b/hw/arm/fsl-imx7.c
index 119b281a50..a17136f83c 100644
--- a/hw/arm/fsl-imx7.c
+++ b/hw/arm/fsl-imx7.c
@@ -459,6 +459,17 @@ static void fsl_imx7_realize(DeviceState *dev, Error **errp)
*/
create_unimplemented_device("sdma", FSL_IMX7_SDMA_ADDR, FSL_IMX7_SDMA_SIZE);
+ /*
+ * OCOTP
+ */
+ create_unimplemented_device("octop", FSL_IMX7_OCOTP_ADDR,
+ FSL_IMX7_OCOTP_SIZE);
+
+ /*
+ * APBH_DMA
+ */
+ create_unimplemented_device("apbh_dma", FSL_IMX7_APBH_DMA_ADDR,
+ FSL_IMX7_APBH_DMA_SIZE);
object_property_set_bool(OBJECT(&s->gpr), true, "realized",
&error_abort);
diff --git a/include/hw/arm/fsl-imx7.h b/include/hw/arm/fsl-imx7.h
index 706aef2e7e..f9faa16515 100644
--- a/include/hw/arm/fsl-imx7.h
+++ b/include/hw/arm/fsl-imx7.h
@@ -113,6 +113,9 @@ enum FslIMX7MemoryMap {
FSL_IMX7_IOMUXC_GPR_ADDR = 0x30340000,
FSL_IMX7_IOMUXCn_SIZE = 0x1000,
+ FSL_IMX7_OCOTP_ADDR = 0x30350000,
+ FSL_IMX7_OCOTP_SIZE = 0x10000,
+
FSL_IMX7_ANALOG_ADDR = 0x30360000,
FSL_IMX7_SNVS_ADDR = 0x30370000,
FSL_IMX7_CCM_ADDR = 0x30380000,
@@ -177,6 +180,9 @@ enum FslIMX7MemoryMap {
FSL_IMX7_A7MPCORE_ADDR = 0x31000000,
FSL_IMX7_A7MPCORE_DAP_ADDR = 0x30000000,
+ FSL_IMX7_APBH_DMA_ADDR = 0x33000000,
+ FSL_IMX7_APBH_DMA_SIZE = 0x2000,
+
FSL_IMX7_PCIE_REG_ADDR = 0x33800000,
FSL_IMX7_PCIE_REG_SIZE = 16 * 1024,
--
2.17.1
On Fri, 13 Mar 2020 at 16:15, Guenter Roeck <linux@roeck-us.net> wrote: > > Instantiating apbh_dma and ocotp as unimplemented devices prevents crashes > when booting Linux. > > apbh_dma: > > [ 14.046518] Unhandled fault: external abort on non-linefetch (0x808) at 0xd0852008 > [ 14.047287] pgd = (ptrval) > [ 14.047607] [d0852008] *pgd=8b028811, *pte=33000653, *ppte=33000453 > [ 14.050074] Internal error: : 808 [#1] SMP ARM > ... > [ 14.077029] [<c0856530>] (stmp_clear_poll_bit) from [<c0856580>] (stmp_reset_block+0x10/0xb8) > [ 14.077642] [<c0856580>] (stmp_reset_block) from [<c1a9655c>] (mxs_dma_probe+0x1f4/0x370) > [ 14.078158] [<c1a9655c>] (mxs_dma_probe) from [<c0b6a7e8>] (platform_drv_probe+0x48/0x98) > [ 14.078641] [<c0b6a7e8>] (platform_drv_probe) from [<c0b685c4>] (really_probe+0x228/0x2d0) > > ocotp: > > [ 71.286109] Unhandled fault: external abort on non-linefetch (0x008) at 0xd0ff0000 > [ 71.287891] pgd = (ptrval) > [ 71.288449] [d0ff0000] *pgd=8b497811, *pte=30350653, *ppte=30350453 > [ 71.291389] Internal error: : 8 [#1] SMP ARM > [ 71.292302] Modules linked in: > [ 71.293583] CPU: 0 PID: 112 Comm: kworker/0:3 Not tainted 5.0.0-10153-g065b6c4c913d-dirty #2 > [ 71.294148] Hardware name: Freescale i.MX7 Dual (Device Tree) > [ 71.296728] Workqueue: events deferred_probe_work_func > [ 71.297740] PC is at imx_ocotp_read+0x68/0x180 > [ 71.298154] LR is at mark_held_locks+0x48/0x74 > > Signed-off-by: Guenter Roeck <linux@roeck-us.net> > --- > hw/arm/fsl-imx7.c | 11 +++++++++++ > include/hw/arm/fsl-imx7.h | 6 ++++++ > 2 files changed, 17 insertions(+) > > diff --git a/hw/arm/fsl-imx7.c b/hw/arm/fsl-imx7.c > index 119b281a50..a17136f83c 100644 > --- a/hw/arm/fsl-imx7.c > +++ b/hw/arm/fsl-imx7.c > @@ -459,6 +459,17 @@ static void fsl_imx7_realize(DeviceState *dev, Error **errp) > */ > create_unimplemented_device("sdma", FSL_IMX7_SDMA_ADDR, FSL_IMX7_SDMA_SIZE); > > + /* > + * OCOTP > + */ > + create_unimplemented_device("octop", FSL_IMX7_OCOTP_ADDR, > + FSL_IMX7_OCOTP_SIZE); "octop" or "ocotp" ? thanks -- PMM
On 3/16/20 8:39 AM, Peter Maydell wrote: > On Fri, 13 Mar 2020 at 16:15, Guenter Roeck <linux@roeck-us.net> wrote: >> >> Instantiating apbh_dma and ocotp as unimplemented devices prevents crashes >> when booting Linux. >> >> apbh_dma: >> >> [ 14.046518] Unhandled fault: external abort on non-linefetch (0x808) at 0xd0852008 >> [ 14.047287] pgd = (ptrval) >> [ 14.047607] [d0852008] *pgd=8b028811, *pte=33000653, *ppte=33000453 >> [ 14.050074] Internal error: : 808 [#1] SMP ARM >> ... >> [ 14.077029] [<c0856530>] (stmp_clear_poll_bit) from [<c0856580>] (stmp_reset_block+0x10/0xb8) >> [ 14.077642] [<c0856580>] (stmp_reset_block) from [<c1a9655c>] (mxs_dma_probe+0x1f4/0x370) >> [ 14.078158] [<c1a9655c>] (mxs_dma_probe) from [<c0b6a7e8>] (platform_drv_probe+0x48/0x98) >> [ 14.078641] [<c0b6a7e8>] (platform_drv_probe) from [<c0b685c4>] (really_probe+0x228/0x2d0) >> >> ocotp: >> >> [ 71.286109] Unhandled fault: external abort on non-linefetch (0x008) at 0xd0ff0000 >> [ 71.287891] pgd = (ptrval) >> [ 71.288449] [d0ff0000] *pgd=8b497811, *pte=30350653, *ppte=30350453 >> [ 71.291389] Internal error: : 8 [#1] SMP ARM >> [ 71.292302] Modules linked in: >> [ 71.293583] CPU: 0 PID: 112 Comm: kworker/0:3 Not tainted 5.0.0-10153-g065b6c4c913d-dirty #2 >> [ 71.294148] Hardware name: Freescale i.MX7 Dual (Device Tree) >> [ 71.296728] Workqueue: events deferred_probe_work_func >> [ 71.297740] PC is at imx_ocotp_read+0x68/0x180 >> [ 71.298154] LR is at mark_held_locks+0x48/0x74 >> >> Signed-off-by: Guenter Roeck <linux@roeck-us.net> >> --- >> hw/arm/fsl-imx7.c | 11 +++++++++++ >> include/hw/arm/fsl-imx7.h | 6 ++++++ >> 2 files changed, 17 insertions(+) >> >> diff --git a/hw/arm/fsl-imx7.c b/hw/arm/fsl-imx7.c >> index 119b281a50..a17136f83c 100644 >> --- a/hw/arm/fsl-imx7.c >> +++ b/hw/arm/fsl-imx7.c >> @@ -459,6 +459,17 @@ static void fsl_imx7_realize(DeviceState *dev, Error **errp) >> */ >> create_unimplemented_device("sdma", FSL_IMX7_SDMA_ADDR, FSL_IMX7_SDMA_SIZE); >> >> + /* >> + * OCOTP >> + */ >> + create_unimplemented_device("octop", FSL_IMX7_OCOTP_ADDR, >> + FSL_IMX7_OCOTP_SIZE); > > "octop" or "ocotp" ? > Oops. Well, "octop" sounds way better, don't you think ? Anyway, I later folded this patch into "hw/arm/fsl-imx7: Instantiate various unimplemented devices" (https://patchwork.kernel.org/patch/11438371/) after it turned out that ocotp alone was insufficient, and that apbh_dma had already been added with another patch. Thanks, Guenter
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