| Paul Beesley | f3653a6 | 2019-05-22 11:22:44 +0100 | [diff] [blame] | 1 | Amlogic Meson S905x (GXL) |
| 2 | ========================= |
| Remi Pommarel | 75e43e0 | 2019-04-01 11:34:09 +0200 | [diff] [blame] | 3 | |
| 4 | The Amlogic Meson S905x is a SoC with a quad core Arm Cortex-A53 running at |
| 5 | 1.5Ghz. It also contains a Cortex-M3 used as SCP. |
| 6 | |
| 7 | This port is a minimal implementation of BL31 capable of booting mainline U-Boot |
| 8 | and Linux: |
| 9 | |
| 10 | - SCPI support. |
| 11 | - Basic PSCI support (CPU_ON, CPU_OFF, SYSTEM_RESET, SYSTEM_OFF). Note that CPU0 |
| 12 | can't be turned off, so there is a workaround to hide this from the caller. |
| 13 | - GICv2 driver set up. |
| 14 | - Basic SIP services (read efuse data, enable/disable JTAG). |
| 15 | |
| 16 | In order to build it: |
| 17 | |
| Paul Beesley | 493e349 | 2019-03-13 15:11:04 +0000 | [diff] [blame] | 18 | .. code:: shell |
| Remi Pommarel | 75e43e0 | 2019-04-01 11:34:09 +0200 | [diff] [blame] | 19 | |
| Mark Dykes | ef3a456 | 2020-01-08 20:37:18 +0000 | [diff] [blame] | 20 | CROSS_COMPILE=aarch64-linux-gnu- make DEBUG=1 PLAT=gxl |
| Remi Pommarel | 75e43e0 | 2019-04-01 11:34:09 +0200 | [diff] [blame] | 21 | |
| Ferass El Hafidi | d0b27dc | 2025-01-08 14:03:02 +0000 | [diff] [blame] | 22 | Or, if willing to boot from U-Boot SPL (using standard params handling): |
| 23 | |
| 24 | .. code:: shell |
| 25 | |
| 26 | CROSS_COMPILE=aarch64-linux-gnu- make DEBUG=1 PLAT=gxl AML_STDPARAMS=1 |
| 27 | |
| Remi Pommarel | 75e43e0 | 2019-04-01 11:34:09 +0200 | [diff] [blame] | 28 | This port has been tested on a Lepotato. After building it, follow the |
| Sandrine Bailleux | 4e82472 | 2020-07-01 13:53:07 +0200 | [diff] [blame] | 29 | instructions in the `gxlimg repository`_ or `U-Boot repository`_, replacing the |
| Remi Pommarel | 75e43e0 | 2019-04-01 11:34:09 +0200 | [diff] [blame] | 30 | mentioned **bl31.img** by the one built from this port. |
| 31 | |
| 32 | .. _gxlimg repository: https://github.com/repk/gxlimg/blob/master/README |
| Sandrine Bailleux | 4e82472 | 2020-07-01 13:53:07 +0200 | [diff] [blame] | 33 | .. _U-Boot repository: https://github.com/u-boot/u-boot/blob/master/doc/board/amlogic/p212.rst |