Patchwork [RESEND,3/4] PPC: e500: split mpc8544ds machine from generic e500 code

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Submitter Scott Wood
Date June 29, 2012, 5:52 p.m.
Message ID <20120629175234.GA16288@buserror.net>
Download mbox | patch
Permalink /patch/168264/
State New
Headers show

Comments

Scott Wood - June 29, 2012, 5:52 p.m.
From: Scott Wood <scottwood@freescale.com>

Currently the only mpc8544ds-ism that is factored out is
toplevel compatible and model.  In the future the generic e500
code is expected to become more generic.

Signed-off-by: Scott Wood <scottwood@freescale.com>
---
Patch 3/4 of the series didn't make it to the list archives or patchwork
despite sending twice (though Alex Graf said he got his directly addresssed
copy).  Hopefully it makes it when sent from another location.

 hw/ppc/Makefile.objs |    2 +-
 hw/ppc/e500.c        |   81 +++++++++++++++++++-------------------------------
 hw/ppc/e500.h        |   21 +++++++++++++
 hw/ppc/mpc8544ds.c   |   61 +++++++++++++++++++++++++++++++++++++
 4 files changed, 114 insertions(+), 51 deletions(-)
 create mode 100644 hw/ppc/e500.h
 create mode 100644 hw/ppc/mpc8544ds.c

Patch

diff --git a/hw/ppc/Makefile.objs b/hw/ppc/Makefile.objs
index aa77f64..23eb8ca 100644
--- a/hw/ppc/Makefile.objs
+++ b/hw/ppc/Makefile.objs
@@ -15,7 +15,7 @@  obj-$(CONFIG_PSERIES) += spapr_pci.o pci-hotplug.o spapr_iommu.o
 obj-y += ppc4xx_devs.o ppc4xx_pci.o ppc405_uc.o ppc405_boards.o
 obj-y += ppc440_bamboo.o
 # PowerPC E500 boards
-obj-$(CONFIG_FDT) += ppc/e500.o mpc8544_guts.o ppce500_spin.o
+obj-$(CONFIG_FDT) += ppc/e500.o mpc8544_guts.o ppce500_spin.o ppc/mpc8544ds.o
 # PowerPC 440 Xilinx ML507 reference board.
 obj-y += virtex_ml507.o
 # PowerPC OpenPIC
diff --git a/hw/ppc/e500.c b/hw/ppc/e500.c
index db5ca6e..f07be08 100644
--- a/hw/ppc/e500.c
+++ b/hw/ppc/e500.c
@@ -16,6 +16,7 @@ 
 
 #include "config.h"
 #include "qemu-common.h"
+#include "e500.h"
 #include "net.h"
 #include "hw/hw.h"
 #include "hw/pc.h"
@@ -106,24 +107,21 @@  static void dt_serial_create(void *fdt, unsigned long long offset,
 }
 
 static int ppce500_load_device_tree(CPUPPCState *env,
+                                    PPCE500Params *params,
                                     target_phys_addr_t addr,
-                                    target_phys_addr_t ramsize,
                                     target_phys_addr_t initrd_base,
-                                    target_phys_addr_t initrd_size,
-                                    const char *kernel_cmdline)
+                                    target_phys_addr_t initrd_size)
 {
     int ret = -1;
-    uint64_t mem_reg_property[] = { 0, cpu_to_be64(ramsize) };
+    uint64_t mem_reg_property[] = { 0, cpu_to_be64(params->ram_size) };
     int fdt_size;
     void *fdt;
     uint8_t hypercall[16];
     uint32_t clock_freq = 400000000;
     uint32_t tb_freq = 400000000;
     int i;
-    const char *compatible = "MPC8544DS\0MPC85xxDS";
-    int compatible_len = sizeof("MPC8544DS\0MPC85xxDS");
+    const char *toplevel_compat = NULL; /* user override */
     char compatible_sb[] = "fsl,mpc8544-immr\0simple-bus";
-    char model[] = "MPC8544DS";
     char soc[128];
     char mpic[128];
     uint32_t mpic_ph;
@@ -146,14 +144,9 @@  static int ppce500_load_device_tree(CPUPPCState *env,
 
     machine_opts = qemu_opts_find(qemu_find_opts("machine"), 0);
     if (machine_opts) {
-        const char *tmp;
         dumpdtb = qemu_opt_get(machine_opts, "dumpdtb");
         dtb_file = qemu_opt_get(machine_opts, "dtb");
-        tmp = qemu_opt_get(machine_opts, "dt_compatible");
-        if (tmp) {
-            compatible = tmp;
-            compatible_len = strlen(compatible) + 1;
-        }
+        toplevel_compat = qemu_opt_get(machine_opts, "dt_compatible");
     }
 
     if (dtb_file) {
@@ -176,8 +169,6 @@  static int ppce500_load_device_tree(CPUPPCState *env,
     }
 
     /* Manipulate device tree in memory. */
-    qemu_devtree_setprop_string(fdt, "/", "model", model);
-    qemu_devtree_setprop(fdt, "/", "compatible", compatible, compatible_len);
     qemu_devtree_setprop_cell(fdt, "/", "#address-cells", 2);
     qemu_devtree_setprop_cell(fdt, "/", "#size-cells", 2);
 
@@ -202,7 +193,7 @@  static int ppce500_load_device_tree(CPUPPCState *env,
     }
 
     ret = qemu_devtree_setprop_string(fdt, "/chosen", "bootargs",
-                                      kernel_cmdline);
+                                      params->kernel_cmdline);
     if (ret < 0)
         fprintf(stderr, "couldn't set /chosen/bootargs\n");
 
@@ -338,6 +329,13 @@  static int ppce500_load_device_tree(CPUPPCState *env,
     qemu_devtree_setprop_cell(fdt, pci, "#address-cells", 3);
     qemu_devtree_setprop_string(fdt, "/aliases", "pci0", pci);
 
+    params->fixup_devtree(params, fdt);
+
+    if (toplevel_compat) {
+        qemu_devtree_setprop(fdt, "/", "compatible", toplevel_compat,
+                             strlen(toplevel_compat) + 1);
+    }
+
 done:
     if (dumpdtb) {
         /* Dump the dtb to a file and quit */
@@ -418,12 +416,7 @@  static void ppce500_cpu_reset(void *opaque)
     mmubooke_create_initial_mapping(env);
 }
 
-static void ppce500_init(ram_addr_t ram_size,
-                         const char *boot_device,
-                         const char *kernel_filename,
-                         const char *kernel_cmdline,
-                         const char *initrd_filename,
-                         const char *cpu_model)
+void ppce500_init(PPCE500Params *params)
 {
     MemoryRegion *address_space_mem = get_system_memory();
     MemoryRegion *ram = g_new(MemoryRegion, 1);
@@ -444,8 +437,8 @@  static void ppce500_init(ram_addr_t ram_size,
     CPUPPCState *firstenv = NULL;
 
     /* Setup CPUs */
-    if (cpu_model == NULL) {
-        cpu_model = "e500v2_v30";
+    if (params->cpu_model == NULL) {
+        params->cpu_model = "e500v2_v30";
     }
 
     irqs = g_malloc0(smp_cpus * sizeof(qemu_irq *));
@@ -454,7 +447,7 @@  static void ppce500_init(ram_addr_t ram_size,
         PowerPCCPU *cpu;
         qemu_irq *input;
 
-        cpu = cpu_ppc_init(cpu_model);
+        cpu = cpu_ppc_init(params->cpu_model);
         if (cpu == NULL) {
             fprintf(stderr, "Unable to initialize CPU!\n");
             exit(1);
@@ -543,43 +536,45 @@  static void ppce500_init(ram_addr_t ram_size,
     sysbus_create_simple("e500-spin", MPC8544_SPIN_BASE, NULL);
 
     /* Load kernel. */
-    if (kernel_filename) {
-        kernel_size = load_uimage(kernel_filename, &entry, &loadaddr, NULL);
+    if (params->kernel_filename) {
+        kernel_size = load_uimage(params->kernel_filename, &entry,
+                                  &loadaddr, NULL);
         if (kernel_size < 0) {
-            kernel_size = load_elf(kernel_filename, NULL, NULL, &elf_entry,
-                                   &elf_lowaddr, NULL, 1, ELF_MACHINE, 0);
+            kernel_size = load_elf(params->kernel_filename, NULL, NULL,
+                                   &elf_entry, &elf_lowaddr, NULL, 1,
+                                   ELF_MACHINE, 0);
             entry = elf_entry;
             loadaddr = elf_lowaddr;
         }
         /* XXX try again as binary */
         if (kernel_size < 0) {
             fprintf(stderr, "qemu: could not load kernel '%s'\n",
-                    kernel_filename);
+                    params->kernel_filename);
             exit(1);
         }
     }
 
     /* Load initrd. */
-    if (initrd_filename) {
+    if (params->initrd_filename) {
         initrd_base = (kernel_size + INITRD_LOAD_PAD) & ~INITRD_PAD_MASK;
-        initrd_size = load_image_targphys(initrd_filename, initrd_base,
+        initrd_size = load_image_targphys(params->initrd_filename, initrd_base,
                                           ram_size - initrd_base);
 
         if (initrd_size < 0) {
             fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
-                    initrd_filename);
+                    params->initrd_filename);
             exit(1);
         }
     }
 
     /* If we're loading a kernel directly, we must load the device tree too. */
-    if (kernel_filename) {
+    if (params->kernel_filename) {
         struct boot_info *boot_info;
         int dt_size;
 
         dt_base = (loadaddr + kernel_size + DTC_LOAD_PAD) & ~DTC_PAD_MASK;
-        dt_size = ppce500_load_device_tree(env, dt_base, ram_size, initrd_base,
-                                           initrd_size, kernel_cmdline);
+        dt_size = ppce500_load_device_tree(env, params, dt_base, initrd_base,
+                                           initrd_size);
         if (dt_size < 0) {
             fprintf(stderr, "couldn't load device tree\n");
             exit(1);
@@ -595,17 +590,3 @@  static void ppce500_init(ram_addr_t ram_size,
         kvmppc_init();
     }
 }
-
-static QEMUMachine ppce500_machine = {
-    .name = "mpc8544ds",
-    .desc = "mpc8544ds",
-    .init = ppce500_init,
-    .max_cpus = 15,
-};
-
-static void ppce500_machine_init(void)
-{
-    qemu_register_machine(&ppce500_machine);
-}
-
-machine_init(ppce500_machine_init);
diff --git a/hw/ppc/e500.h b/hw/ppc/e500.h
new file mode 100644
index 0000000..7ae87f4
--- /dev/null
+++ b/hw/ppc/e500.h
@@ -0,0 +1,21 @@ 
+#ifndef PPCE500_H
+#define PPCE500_H
+
+typedef struct PPCE500Params {
+    /* Standard QEMU machine init params */
+    ram_addr_t ram_size;
+    const char *boot_device;
+    const char *kernel_filename;
+    const char *kernel_cmdline;
+    const char *initrd_filename;
+    const char *cpu_model;
+
+    /* e500-specific params */
+
+    /* required -- must at least add toplevel board compatible */
+    void (*fixup_devtree)(struct PPCE500Params *params, void *fdt);
+} PPCE500Params;
+
+void ppce500_init(PPCE500Params *params);
+
+#endif
diff --git a/hw/ppc/mpc8544ds.c b/hw/ppc/mpc8544ds.c
new file mode 100644
index 0000000..984d21c
--- /dev/null
+++ b/hw/ppc/mpc8544ds.c
@@ -0,0 +1,61 @@ 
+/*
+ * Support for the PPC e500-based mpc8544ds board
+ *
+ * Copyright 2012 Freescale Semiconductor, Inc.
+ *
+ * This is free software; you can redistribute it and/or modify
+ * it under the terms of  the GNU General  Public License as published by
+ * the Free Software Foundation;  either version 2 of the  License, or
+ * (at your option) any later version.
+ */
+
+#include "config.h"
+#include "qemu-common.h"
+#include "e500.h"
+#include "../boards.h"
+#include "device_tree.h"
+
+static void mpc8544ds_fixup_devtree(PPCE500Params *params, void *fdt)
+{
+    const char model[] = "MPC8544DS";
+    const char compatible[] = "MPC8544DS\0MPC85xxDS";
+
+    qemu_devtree_setprop(fdt, "/", "model", model, sizeof(model));
+    qemu_devtree_setprop(fdt, "/", "compatible", compatible,
+                         sizeof(compatible));
+}
+
+static void mpc8544ds_init(ram_addr_t ram_size,
+                           const char *boot_device,
+                           const char *kernel_filename,
+                           const char *kernel_cmdline,
+                           const char *initrd_filename,
+                           const char *cpu_model)
+{
+    PPCE500Params params = {
+        .ram_size = ram_size,
+        .boot_device = boot_device,
+        .kernel_filename = kernel_filename,
+        .kernel_cmdline = kernel_cmdline,
+        .initrd_filename = initrd_filename,
+        .cpu_model = cpu_model,
+        .fixup_devtree = mpc8544ds_fixup_devtree,
+    };
+
+    ppce500_init(&params);
+}
+
+
+static QEMUMachine ppce500_machine = {
+    .name = "mpc8544ds",
+    .desc = "mpc8544ds",
+    .init = mpc8544ds_init,
+    .max_cpus = 15,
+};
+
+static void ppce500_machine_init(void)
+{
+    qemu_register_machine(&ppce500_machine);
+}
+
+machine_init(ppce500_machine_init);