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| releases:21.02:notes-21.02.0-rc1 [2021/04/26 21:04] – point to 21.0.0-rc1 folder hauke | releases:21.02:notes-21.02.0-rc1 [2021/04/27 15:19] – [Increased minimum hardware requirements: 8 MB flash, 64 MB RAM] zorun |
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| The following targets are using a switch managed with DSA in OpenWrt 21.02: | The following targets are using a switch managed with DSA in OpenWrt 21.02: |
| * ''ath79'' (only TP-Link TL-WR941ND) | * [[:docs:techref:targets:ath79]] (only TP-Link TL-WR941ND) |
| * ''bcm4908'' | * [[:docs:techref:targets:bcm4908]] |
| * ''gemini'' | * [[:docs:techref:targets:gemini]] |
| * ''kirkwood'' | * [[:docs:techref:targets:kirkwood]] |
| * ''mediatek'' (most boards) | * [[:docs:techref:targets:mediatek]] (most boards) |
| * ''mvebu'' | * [[:docs:techref:targets:mvebu]] |
| * ''octeon'' | * [[:docs:techref:targets:octeon]] |
| * ''ramips/mt7621'' | * [[:docs:techref:targets:ramips]] (mt7621 subtarget only) |
| * ''realtek'' | * [[:docs:techref:targets:realtek]] |
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| ==== Increased minimum hardware requirements: 8 MB flash, 64 MB RAM ==== | ==== Increased minimum hardware requirements: 8 MB flash, 64 MB RAM ==== |
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| Due to new features being introduced and the general size increase of the Linux kernel, devices now need at least 8 MB of flash and 64 MB of RAM to run a default build of OpenWrt. | Due to new features being introduced and the general size increase of the Linux kernel, devices now need at least 8 MB of flash and 64 MB of RAM to run a default build of OpenWrt. |
| | More flash space is recommended for extensibility, see [[:supported_devices:864_warning|8/64 warning]] |
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| It is still possible to build custom OpenWrt images (e.g. using the [[docs:guide-user:additional-software:imagebuilder|ImageBuilder]]) that may fit devices with 4 MB of flash or 32 MB of RAM. | It is still possible to build custom OpenWrt images (e.g. using the [[docs:guide-user:additional-software:imagebuilder|ImageBuilder]]) that may fit devices with 4 MB of flash or 32 MB of RAM. |
| ==== New hardware targets ==== | ==== New hardware targets ==== |
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| A new ''realtek'' target has been added, which is often found in managed switches. As a result, it is now possible to run OpenWrt on devices with a significant number of Ethernet ports. | A new [[:docs:techref:targets:realtek]] target has been added, which is often found in managed switches. As a result, it is now possible to run OpenWrt on devices with a significant number of Ethernet ports. |
| See [[:toh:views:toh_dev_arch-target-cpu|supported devices for realtek]]. | See [[:toh:views:toh_standard_all?dataflt[0]=target_%3Drealtek|supported devices for realtek]]. |
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| In addition, new ''bcm4908'' and ''rockchip'' targets have been added. | In addition, new [[:docs:techref:targets:bcm4908]] and [[:docs:techref:targets:rockchip]] targets have been added. |
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| Support for many new boards was added to the existing targets. | Support for many new boards was added to the existing targets. |
| ==== Dropped hardware targets ==== | ==== Dropped hardware targets ==== |
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| The ''ar71xx'' was deprecated in OpenWrt 19.07 and was gradually replaced by ''ath79'', see [[:docs:techref:targets:ar71xx-ath79|ar71xx-ath79 migration]]. | The [[:docs:techref:targets:ar71xx]] target was deprecated in OpenWrt 19.07 and has been gradually replaced by [[:docs:techref:targets:ath79]], see [[:docs:techref:targets:ar71xx-ath79|ar71xx-ath79 migration]]. |
| With OpenWrt 21.02, the ''ar71xx'' has been removed and users must use ''ath79'' instead. | |
| If you are still running with the ''ar71xx'' target, it is recommended to reinstall OpenWrt 21.02 from scratch. Users already on the ''ath79'' target can use sysupgrade to upgrade to OpenWrt 21.02. | |
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| Other targets were also removed: ''cns3xxx'', ''rb532'' and ''samsung''. | With OpenWrt 21.02, the [[:docs:techref:targets:ar71xx]] has now been removed and users must use [[:docs:techref:targets:ath79]] instead. |
| | If you are still running with the [[:docs:techref:targets:ar71xx]] target, it is recommended to reinstall OpenWrt 21.02 from scratch. Users already on the [[:docs:techref:targets:ath79]] target can use sysupgrade to upgrade to OpenWrt 21.02. |
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| | Other targets were also removed: [[:docs:techref:targets:cns3xxx]], [[:docs:techref:targets:rb532]] and [[:docs:techref:targets:samsung]]. |
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| ==== ASLR activated ==== | ==== ASLR activated ==== |