| Samsung Exynos SYSRAM for SMP bringup: |
| ------------------------------------ |
| |
| Samsung SMP-capable Exynos SoCs use part of the SYSRAM for the bringup |
| of the secondary cores. Once the core gets powered up it executes the |
| code that is residing at some specific location of the SYSRAM. |
| |
| Therefore reserved section sub-nodes have to be added to the mmio-sram |
| declaration. These nodes are of two types depending upon secure or |
| non-secure execution environment. |
| |
| Required sub-node properties: |
| - compatible : depending upon boot mode, should be |
| "samsung,exynos4210-sysram" : for Secure SYSRAM |
| "samsung,exynos4210-sysram-ns" : for Non-secure SYSRAM |
| |
| The rest of the properties should follow the generic mmio-sram discription |
| found in ../../misc/sysram.txt |
| |
| Example: |
| |
| sysram@02020000 { |
| compatible = "mmio-sram"; |
| reg = <0x02020000 0x54000>; |
| #address-cells = <1>; |
| #size-cells = <1>; |
| ranges = <0 0x02020000 0x54000>; |
| |
| smp-sysram@0 { |
| compatible = "samsung,exynos4210-sysram"; |
| reg = <0x0 0x1000>; |
| }; |
| |
| smp-sysram@53000 { |
| compatible = "samsung,exynos4210-sysram-ns"; |
| reg = <0x53000 0x1000>; |
| }; |
| }; |