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PPC: e500: dt: create serial nodes dynamically

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Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Alexander Graf 2012-05-17 14:51:34 +02:00
parent 5da9662439
commit 0cfc6e8d9e
2 changed files with 35 additions and 26 deletions
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35
hw/ppce500_mpc8544ds.c
View File

@ -81,6 +81,8 @@ static int mpc8544_load_device_tree(CPUPPCState *env,
char compatible[] = "MPC8544DS\0MPC85xxDS";
char model[] = "MPC8544DS";
char soc[128];
char ser0[128];
char ser1[128];
filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE);
if (!filename) {
@ -182,6 +184,7 @@ static int mpc8544_load_device_tree(CPUPPCState *env,
}
}
qemu_devtree_add_subnode(fdt, "/aliases");
/* XXX These should go into their respective devices' code */
snprintf(soc, sizeof(soc), "/soc8544@%x", MPC8544_CCSRBAR_BASE);
qemu_devtree_add_subnode(fdt, soc);
@ -196,6 +199,38 @@ static int mpc8544_load_device_tree(CPUPPCState *env,
/* XXX should contain a reasonable value */
qemu_devtree_setprop_cell(fdt, soc, "bus-frequency", 0);
/*
* We have to generate ser1 first, because Linux takes the first
* device it finds in the dt as serial output device. And we generate
* devices in reverse order to the dt.
*/
snprintf(ser1, sizeof(ser1), "%s/serial@%x", soc,
MPC8544_SERIAL1_REGS_BASE - MPC8544_CCSRBAR_BASE);
qemu_devtree_add_subnode(fdt, ser1);
qemu_devtree_setprop_string(fdt, ser1, "device_type", "serial");
qemu_devtree_setprop_string(fdt, ser1, "compatible", "ns16550");
qemu_devtree_setprop_cells(fdt, ser1, "reg", MPC8544_SERIAL1_REGS_BASE -
MPC8544_CCSRBAR_BASE, 0x100);
qemu_devtree_setprop_cell(fdt, ser1, "cell-index", 1);
qemu_devtree_setprop_cell(fdt, ser1, "clock-frequency", 0);
qemu_devtree_setprop_cells(fdt, ser1, "interrupts", 42, 2);
qemu_devtree_setprop_phandle(fdt, ser1, "interrupt-parent", mpic);
qemu_devtree_setprop_string(fdt, "/aliases", "serial1", ser1);
snprintf(ser0, sizeof(ser0), "%s/serial@%x", soc,
MPC8544_SERIAL0_REGS_BASE - MPC8544_CCSRBAR_BASE);
qemu_devtree_add_subnode(fdt, ser0);
qemu_devtree_setprop_string(fdt, ser0, "device_type", "serial");
qemu_devtree_setprop_string(fdt, ser0, "compatible", "ns16550");
qemu_devtree_setprop_cells(fdt, ser0, "reg", MPC8544_SERIAL0_REGS_BASE -
MPC8544_CCSRBAR_BASE, 0x100);
qemu_devtree_setprop_cell(fdt, ser0, "cell-index", 0);
qemu_devtree_setprop_cell(fdt, ser0, "clock-frequency", 0);
qemu_devtree_setprop_cells(fdt, ser0, "interrupts", 42, 2);
qemu_devtree_setprop_phandle(fdt, ser0, "interrupt-parent", mpic);
qemu_devtree_setprop_string(fdt, "/aliases", "serial0", ser0);
qemu_devtree_setprop_string(fdt, "/chosen", "linux,stdout-path", ser0);
ret = rom_add_blob_fixed(BINARY_DEVICE_TREE_FILE, fdt, fdt_size, addr);
if (ret < 0) {
goto out;

26
pc-bios/mpc8544ds.dts
View File

@ -12,32 +12,10 @@
/dts-v1/;
/ {
aliases {
serial0 = &serial0;
serial1 = &serial1;
pci0 = &pci0;
};
soc8544@e0000000 {
serial0: serial@4500 {
cell-index = <0>;
device_type = "serial";
compatible = "ns16550";
reg = <0x4500 0x100>;
clock-frequency = <0>;
interrupts = <42 2>;
interrupt-parent = <&mpic>;
};
serial1: serial@4600 {
cell-index = <1>;
device_type = "serial";
compatible = "ns16550";
reg = <0x4600 0x100>;
clock-frequency = <0>;
interrupts = <42 2>;
interrupt-parent = <&mpic>;
};
mpic: pic@40000 {
interrupt-controller;
#address-cells = <0>;
@ -85,8 +63,4 @@
#address-cells = <3>;
reg = <0xe0008000 0x1000>;
};
chosen {
linux,stdout-path = "/soc8544@e0000000/serial@4500";
};
};