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authorHelge Deller <deller@gmx.de>2018-03-25 18:52:58 +0200
committerHelge Deller <deller@gmx.de>2018-03-27 18:52:22 +0200
commita77ab0e7ce232a62adac3d85b9ae66d0f48385ac (patch)
tree5be2930f3a2697d91dbcab381e61367d61f9d289 /arch/parisc
parentb845f66f78bf42a4ce98e5cfe0e94fab41dd0742 (diff)
parisc: Add code generator for Qemu/SeaBIOS machine info
Qemu now supports emulating PA-RISC machines. For that a forked version of SeaBIOS available at https://github.com/hdeller/seabios-hppa is used which requires some information about the emulated machine. This patch adds code to generate a header file with the necessary information for SeaBIOS. The information is extracted from the firmware the current kernel is running on. Tested on a B160L workstation. Signed-off-by: Helge Deller <deller@gmx.de>
Diffstat (limited to 'arch/parisc')
-rw-r--r--arch/parisc/kernel/drivers.c171
1 files changed, 171 insertions, 0 deletions
diff --git a/arch/parisc/kernel/drivers.c b/arch/parisc/kernel/drivers.c
index d4256145b74c..6afb595e0d86 100644
--- a/arch/parisc/kernel/drivers.c
+++ b/arch/parisc/kernel/drivers.c
@@ -895,6 +895,171 @@ void __init init_parisc_bus(void)
get_device(&root);
}
+static __init void qemu_header(void)
+{
+ int num;
+ unsigned long *p;
+
+ pr_info("--- cut here ---\n");
+ pr_info("/* AUTO-GENERATED HEADER FILE FOR SEABIOS FIRMWARE */\n");
+ pr_cont("/* generated with Linux kernel */\n");
+ pr_cont("/* search for PARISC_QEMU_MACHINE_HEADER in Linux */\n\n");
+
+ pr_info("#define PARISC_MODEL \"%s\"\n\n",
+ boot_cpu_data.pdc.sys_model_name);
+
+ pr_info("#define PARISC_PDC_MODEL 0x%lx, 0x%lx, 0x%lx, "
+ "0x%lx, 0x%lx, 0x%lx, 0x%lx, 0x%lx, 0x%lx\n\n",
+ #define p ((unsigned long *)&boot_cpu_data.pdc.model)
+ p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7], p[8]);
+ #undef p
+
+ pr_info("#define PARISC_PDC_VERSION 0x%04lx\n\n",
+ boot_cpu_data.pdc.versions);
+
+ pr_info("#define PARISC_PDC_CPUID 0x%04lx\n\n",
+ boot_cpu_data.pdc.cpuid);
+
+ pr_info("#define PARISC_PDC_CAPABILITIES 0x%04lx\n\n",
+ boot_cpu_data.pdc.capabilities);
+
+ pr_info("#define PARISC_PDC_ENTRY_ORG 0x%04lx\n\n",
+#ifdef CONFIG_64BIT
+ (unsigned long)(PAGE0->mem_pdc_hi) << 32 |
+#endif
+ (unsigned long)PAGE0->mem_pdc);
+
+ pr_info("#define PARISC_PDC_CACHE_INFO");
+ p = (unsigned long *) &cache_info;
+ for (num = 0; num < sizeof(cache_info); num += sizeof(unsigned long)) {
+ if (((num % 5) == 0)) {
+ pr_cont(" \\\n");
+ pr_info("\t");
+ }
+ pr_cont("%s0x%04lx",
+ num?", ":"", *p++);
+ }
+ pr_cont("\n\n");
+}
+
+static __init int qemu_print_hpa(struct device *lin_dev, void *data)
+{
+ struct parisc_device *dev = to_parisc_device(lin_dev);
+ unsigned long hpa = dev->hpa.start;
+
+ pr_cont("\t{\t.hpa = 0x%08lx,\\\n", hpa);
+ pr_cont("\t\t.iodc = &iodc_data_hpa_%08lx,\\\n", hpa);
+ pr_cont("\t\t.mod_info = &mod_info_hpa_%08lx,\\\n", hpa);
+ pr_cont("\t\t.mod_path = &mod_path_hpa_%08lx,\\\n", hpa);
+ pr_cont("\t\t.num_addr = HPA_%08lx_num_addr,\\\n", hpa);
+ pr_cont("\t\t.add_addr = { HPA_%08lx_add_addr } },\\\n", hpa);
+ return 0;
+}
+
+
+static __init void qemu_footer(void)
+{
+ pr_info("\n\n#define PARISC_DEVICE_LIST \\\n");
+ for_each_padev(qemu_print_hpa, NULL);
+ pr_cont("\t{ 0, }\n");
+ pr_info("--- cut here ---\n");
+}
+
+/* print iodc data of the various hpa modules for qemu inclusion */
+static __init int qemu_print_iodc_data(struct device *lin_dev, void *data)
+{
+ struct parisc_device *dev = to_parisc_device(lin_dev);
+ unsigned long count;
+ unsigned long hpa = dev->hpa.start;
+ int status;
+ struct pdc_iodc iodc_data;
+
+ int mod_index;
+ struct pdc_system_map_mod_info pdc_mod_info;
+ struct pdc_module_path mod_path;
+
+ status = pdc_iodc_read(&count, hpa, 0,
+ &iodc_data, sizeof(iodc_data));
+ if (status != PDC_OK) {
+ pr_info("No IODC data for hpa 0x%08lx\n", hpa);
+ return 0;
+ }
+
+ pr_info("\n");
+
+ pr_info("#define HPA_%08lx_DESCRIPTION \"%s\"\n",
+ hpa, parisc_hardware_description(&dev->id));
+
+ mod_index = 0;
+ do {
+ status = pdc_system_map_find_mods(&pdc_mod_info,
+ &mod_path, mod_index++);
+ } while (status == PDC_OK && pdc_mod_info.mod_addr != hpa);
+
+ pr_info("static struct pdc_system_map_mod_info"
+ " mod_info_hpa_%08lx = {\n", hpa);
+ #define DO(member) \
+ pr_cont("\t." #member " = 0x%x,\n", \
+ (unsigned int)pdc_mod_info.member)
+ DO(mod_addr);
+ DO(mod_pgs);
+ DO(add_addrs);
+ pr_cont("};\n");
+ #undef DO
+ pr_info("static struct pdc_module_path "
+ "mod_path_hpa_%08lx = {\n", hpa);
+ pr_cont("\t.path = { ");
+ pr_cont(".flags = 0x%x, ", mod_path.path.flags);
+ pr_cont(".bc = { 0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x }, ",
+ (unsigned char)mod_path.path.bc[0],
+ (unsigned char)mod_path.path.bc[1],
+ (unsigned char)mod_path.path.bc[2],
+ (unsigned char)mod_path.path.bc[3],
+ (unsigned char)mod_path.path.bc[4],
+ (unsigned char)mod_path.path.bc[5]);
+ pr_cont(".mod = 0x%x ", mod_path.path.mod);
+ pr_cont(" },\n");
+ pr_cont("\t.layers = { 0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x }\n",
+ mod_path.layers[0], mod_path.layers[1], mod_path.layers[2],
+ mod_path.layers[3], mod_path.layers[4], mod_path.layers[5]);
+ pr_cont("};\n");
+
+ pr_info("static struct pdc_iodc iodc_data_hpa_%08lx = {\n", hpa);
+ #define DO(member) \
+ pr_cont("\t." #member " = 0x%04lx,\n", \
+ (unsigned long)iodc_data.member)
+ DO(hversion_model);
+ DO(hversion);
+ DO(spa);
+ DO(type);
+ DO(sversion_rev);
+ DO(sversion_model);
+ DO(sversion_opt);
+ DO(rev);
+ DO(dep);
+ DO(features);
+ DO(checksum);
+ DO(length);
+ #undef DO
+ pr_cont("\t/* pad: 0x%04x, 0x%04x */\n",
+ iodc_data.pad[0], iodc_data.pad[1]);
+ pr_cont("};\n");
+
+ pr_info("#define HPA_%08lx_num_addr %d\n", hpa, dev->num_addrs);
+ pr_info("#define HPA_%08lx_add_addr ", hpa);
+ count = 0;
+ if (dev->num_addrs == 0)
+ pr_cont("0");
+ while (count < dev->num_addrs) {
+ pr_cont("0x%08lx, ", dev->addr[count]);
+ count++;
+ }
+ pr_cont("\n\n");
+
+ return 0;
+}
+
+
static int print_one_device(struct device * dev, void * data)
{
@@ -911,4 +1076,10 @@ static int print_one_device(struct device * dev, void * data)
void __init print_parisc_devices(void)
{
for_each_padev(print_one_device, NULL);
+ #define PARISC_QEMU_MACHINE_HEADER 0
+ if (PARISC_QEMU_MACHINE_HEADER) {
+ qemu_header();
+ for_each_padev(qemu_print_iodc_data, NULL);
+ qemu_footer();
+ }
}