diff options
| author | Hou Zhiqiang | 2016-07-29 18:26:36 +0800 |
|---|---|---|
| committer | York Sun | 2016-08-02 09:47:49 -0700 |
| commit | 2c774165449ebb180060b8596764140cfb00a1e1 (patch) | |
| tree | 64b5dcf3c2d369bbac88c33db627230367ff5cca /arch/arm/lib | |
| parent | 388aabc85d4c6a0e603e45421e7e2edadd9f24ac (diff) | |
arm/PSCI: Fixed the backward compatiblity issue
Appended the compatible strings of old version PSCI to the latest
version supported. And there are some psci functions' property must
be added to DT only for psci version 0.1, including cpu_on, cpu_off,
cpu_suspend, migrate.
Note, ARMv8 Secure Firmware Framework doesn't support PSCI ver 0.1.
Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
Diffstat (limited to 'arch/arm/lib')
| -rw-r--r-- | arch/arm/lib/psci-dt.c | 61 |
1 files changed, 35 insertions, 26 deletions
diff --git a/arch/arm/lib/psci-dt.c b/arch/arm/lib/psci-dt.c index bcd92e77eea..af49c249cd9 100644 --- a/arch/arm/lib/psci-dt.c +++ b/arch/arm/lib/psci-dt.c @@ -19,7 +19,6 @@ int fdt_psci(void *fdt) #if defined(CONFIG_ARMV8_PSCI) || defined(CONFIG_ARMV7_PSCI) int nodeoff; unsigned int psci_ver = 0; - char *psci_compt; int tmp; nodeoff = fdt_path_offset(fdt, "/cpus"); @@ -68,39 +67,49 @@ init_psci_node: psci_ver = sec_firmware_support_psci_version(); #endif switch (psci_ver) { - case 0x00010000: - psci_compt = "arm,psci-1.0"; - break; - case 0x00000002: - psci_compt = "arm,psci-0.2"; - break; + case ARM_PSCI_VER_1_0: + tmp = fdt_setprop_string(fdt, nodeoff, + "compatible", "arm,psci-1.0"); + if (tmp) + return tmp; + case ARM_PSCI_VER_0_2: + tmp = fdt_appendprop_string(fdt, nodeoff, + "compatible", "arm,psci-0.2"); + if (tmp) + return tmp; default: - psci_compt = "arm,psci"; + /* + * The Secure firmware framework isn't able to support PSCI version 0.1. + */ +#ifndef CONFIG_ARMV8_SEC_FIRMWARE_SUPPORT + tmp = fdt_appendprop_string(fdt, nodeoff, + "compatible", "arm,psci"); + if (tmp) + return tmp; + tmp = fdt_setprop_u32(fdt, nodeoff, "cpu_suspend", + ARM_PSCI_FN_CPU_SUSPEND); + if (tmp) + return tmp; + tmp = fdt_setprop_u32(fdt, nodeoff, "cpu_off", + ARM_PSCI_FN_CPU_OFF); + if (tmp) + return tmp; + tmp = fdt_setprop_u32(fdt, nodeoff, "cpu_on", + ARM_PSCI_FN_CPU_ON); + if (tmp) + return tmp; + tmp = fdt_setprop_u32(fdt, nodeoff, "migrate", + ARM_PSCI_FN_MIGRATE); + if (tmp) + return tmp; +#endif break; } - tmp = fdt_setprop_string(fdt, nodeoff, "compatible", psci_compt); - if (tmp) - return tmp; tmp = fdt_setprop_string(fdt, nodeoff, "method", "smc"); if (tmp) return tmp; -#ifdef CONFIG_ARMV7_PSCI - tmp = fdt_setprop_u32(fdt, nodeoff, "cpu_suspend", - ARM_PSCI_FN_CPU_SUSPEND); - if (tmp) - return tmp; - tmp = fdt_setprop_u32(fdt, nodeoff, "cpu_off", ARM_PSCI_FN_CPU_OFF); - if (tmp) - return tmp; - tmp = fdt_setprop_u32(fdt, nodeoff, "cpu_on", ARM_PSCI_FN_CPU_ON); - if (tmp) - return tmp; - tmp = fdt_setprop_u32(fdt, nodeoff, "migrate", ARM_PSCI_FN_MIGRATE); - if (tmp) - return tmp; -#endif #endif return 0; } |