Combine machine descriptions and code of all P2020 boards into just one
generic unified P2020 machine description. This allows kernel to boot on
any P2020-based board with P2020 DTS file without need to patch kernel and
define a new machine description in 85xx powerpc platform directory.
Signed-off-by: Pali Rohár <p...@kernel.org>
---
arch/powerpc/platforms/85xx/p2020.c | 83 +++++++----------------------
1 file changed, 19 insertions(+), 64 deletions(-)
diff --git a/arch/powerpc/platforms/85xx/p2020.c
b/arch/powerpc/platforms/85xx/p2020.c
index d327e6c9b838..1a3ffeb47dfc 100644
--- a/arch/powerpc/platforms/85xx/p2020.c
+++ b/arch/powerpc/platforms/85xx/p2020.c
@@ -154,83 +154,38 @@ static void __init p2020_setup_arch(void)
#endif
}
-#ifdef CONFIG_MPC85xx_DS
-machine_arch_initcall(p2020_ds, mpc85xx_common_publish_devices);
-#endif /* CONFIG_MPC85xx_DS */
-
-#ifdef CONFIG_MPC85xx_RDB
-machine_arch_initcall(p2020_rdb, mpc85xx_common_publish_devices);
-machine_arch_initcall(p2020_rdb_pc, mpc85xx_common_publish_devices);
-#endif /* CONFIG_MPC85xx_RDB */
+machine_arch_initcall(p2020, mpc85xx_common_publish_devices);
/*
* Called very early, device-tree isn't unflattened
*/
-#ifdef CONFIG_MPC85xx_DS
-static int __init p2020_ds_probe(void)
-{
- return !!of_machine_is_compatible("fsl,P2020DS");
-}
-#endif /* CONFIG_MPC85xx_DS */
-
-#ifdef CONFIG_MPC85xx_RDB
-static int __init p2020_rdb_probe(void)
-{
- if (of_machine_is_compatible("fsl,P2020RDB"))
- return 1;
- return 0;
-}
-
-static int __init p2020_rdb_pc_probe(void)
+static int __init p2020_probe(void)
{
- if (of_machine_is_compatible("fsl,P2020RDB-PC"))
- return 1;
- return 0;
+ struct device_node *p2020_cpu;
+
+ /*
+ * There is no common compatible string for all P2020 boards.
+ * The only common thing is "PowerPC,P2020@0" cpu node.
+ * So check for P2020 board via this cpu node.
+ */
+ p2020_cpu = of_find_node_by_path("/cpus/PowerPC,P2020@0");
+ if (!p2020_cpu)
+ return 0;
+
+ of_node_put(p2020_cpu);
+ return 1;
}
-#endif /* CONFIG_MPC85xx_RDB */
-
-#ifdef CONFIG_MPC85xx_DS
-define_machine(p2020_ds) {
- .name = "P2020 DS",
- .probe = p2020_ds_probe,
- .setup_arch = p2020_setup_arch,
- .init_IRQ = p2020_pic_init,
-#ifdef CONFIG_PCI
- .pcibios_fixup_bus = fsl_pcibios_fixup_bus,
- .pcibios_fixup_phb = fsl_pcibios_fixup_phb,
-#endif
- .get_irq = mpic_get_irq,
- .calibrate_decr = generic_calibrate_decr,
- .progress = udbg_progress,
-};
-#endif /* CONFIG_MPC85xx_DS */
-
-#ifdef CONFIG_MPC85xx_RDB
-define_machine(p2020_rdb) {
- .name = "P2020 RDB",
- .probe = p2020_rdb_probe,
- .setup_arch = p2020_setup_arch,
- .init_IRQ = p2020_pic_init,
-#ifdef CONFIG_PCI
- .pcibios_fixup_bus = fsl_pcibios_fixup_bus,
- .pcibios_fixup_phb = fsl_pcibios_fixup_phb,
-#endif
- .get_irq = mpic_get_irq,
- .calibrate_decr = generic_calibrate_decr,
- .progress = udbg_progress,
-};
-define_machine(p2020_rdb_pc) {
- .name = "P2020RDB-PC",
- .probe = p2020_rdb_pc_probe,
+define_machine(p2020) {
+ .name = "Freescale P2020",
+ .probe = p2020_probe,
.setup_arch = p2020_setup_arch,
.init_IRQ = p2020_pic_init,
#ifdef CONFIG_PCI
.pcibios_fixup_bus = fsl_pcibios_fixup_bus,
- .pcibios_fixup_phb = fsl_pcibios_fixup_phb,
+ .pcibios_fixup_phb = fsl_pcibios_fixup_phb,
#endif
.get_irq = mpic_get_irq,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
};
-#endif /* CONFIG_MPC85xx_RDB */
--
2.20.1
