kernel: update and enable full 1GB of RAM on Clearfog Base
I had no idea that I need CONFIG_HIGHMEM to be able to even *see* more
than about 750 MB of RAM on this particular ARM CPU, but hey, here it
goes. (At least there was an info message in dmesg.)
Before:
# free
total used free shared buff/cache available
Mem: 769276 47968 407976 269304 313332 438664
Swap: 0 0 0
Now:
# free
total used free shared buff/cache available
Mem: 1029352 49392 894400 43168 85560 913896
Swap: 0 0 0
Also update to the latest stable (our patches are available as cesnet/2020-04-29).
Change-Id: I6cabd684fcfbe78a2718130ae46ca7f77b4c8228
diff --git a/board/czechlight/clearfog/linux.fragment b/board/czechlight/clearfog/linux.fragment
index 744e96d..71cd8bd 100644
--- a/board/czechlight/clearfog/linux.fragment
+++ b/board/czechlight/clearfog/linux.fragment
@@ -1,3 +1,6 @@
+# enable 1GB of RAM, not just 750 MB
+CONFIG_HIGHMEM=y
+
# this is a part of the Clearfog Base carrier
CONFIG_SENSORS_MCP3021=y
diff --git a/board/czechlight/clearfog/patches/linux.patch b/board/czechlight/clearfog/patches/linux.patch
index 62b40b0..b5ab6b3 100644
--- a/board/czechlight/clearfog/patches/linux.patch
+++ b/board/czechlight/clearfog/patches/linux.patch
@@ -130,7 +130,7 @@
data->ngpio = ngpio;
diff --git a/drivers/spi/spi-orion.c b/drivers/spi/spi-orion.c
-index c7266ef295fd..576bce155456 100644
+index 1f59beb7d27e..afbcc92dcaf8 100644
--- a/drivers/spi/spi-orion.c
+++ b/drivers/spi/spi-orion.c
@@ -88,10 +88,6 @@ struct orion_direct_acc {
@@ -171,7 +171,7 @@
if (vaddr && xfer->tx_buf && word_len == 8) {
unsigned int cnt = count / 4;
-@@ -682,7 +678,6 @@ static int orion_spi_probe(struct platform_device *pdev)
+@@ -681,7 +677,6 @@ static int orion_spi_probe(struct platform_device *pdev)
}
for_each_available_child_of_node(pdev->dev.of_node, np) {
@@ -179,7 +179,7 @@
u32 cs;
int cs_gpio;
-@@ -750,13 +745,14 @@ static int orion_spi_probe(struct platform_device *pdev)
+@@ -749,13 +744,14 @@ static int orion_spi_probe(struct platform_device *pdev)
* This needs to get extended for the direct SPI-NOR / SPI-NAND
* support, once this gets implemented.
*/
diff --git a/configs/czechlight_beaglebone_defconfig b/configs/czechlight_beaglebone_defconfig
index d43a1ab..8b859d3 100644
--- a/configs/czechlight_beaglebone_defconfig
+++ b/configs/czechlight_beaglebone_defconfig
@@ -22,7 +22,7 @@
BR2_ROOTFS_POST_SCRIPT_ARGS="-c $(BR2_EXTERNAL_CZECHLIGHT_PATH)/board/czechlight/beaglebone/genimage.cfg"
BR2_LINUX_KERNEL=y
BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.5.8"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.6.7"
BR2_LINUX_KERNEL_DEFCONFIG="omap2plus"
BR2_LINUX_KERNEL_CONFIG_FRAGMENT_FILES="$(BR2_EXTERNAL_CZECHLIGHT_PATH)/board/czechlight/common/linux.fragment $(BR2_EXTERNAL_CZECHLIGHT_PATH)/board/czechlight/beaglebone/linux.fragment"
BR2_LINUX_KERNEL_DTS_SUPPORT=y
diff --git a/configs/czechlight_clearfog_defconfig b/configs/czechlight_clearfog_defconfig
index 9ae3715..f68fd78 100644
--- a/configs/czechlight_clearfog_defconfig
+++ b/configs/czechlight_clearfog_defconfig
@@ -25,7 +25,7 @@
BR2_ROOTFS_POST_SCRIPT_ARGS="-c $(BR2_EXTERNAL_CZECHLIGHT_PATH)/board/czechlight/clearfog/genimage.cfg"
BR2_LINUX_KERNEL=y
BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.5.8"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.6.7"
BR2_LINUX_KERNEL_PATCH="$(BR2_EXTERNAL_CZECHLIGHT_PATH)/board/czechlight/clearfog/patches/linux.patch"
BR2_LINUX_KERNEL_DEFCONFIG="mvebu_v7"
BR2_LINUX_KERNEL_CONFIG_FRAGMENT_FILES="$(BR2_EXTERNAL_CZECHLIGHT_PATH)/board/czechlight/clearfog/linux.fragment $(BR2_EXTERNAL_CZECHLIGHT_PATH)/board/czechlight/common/linux.fragment"