diff options
| -rw-r--r-- | arch/powerpc/kernel/vmlinux.lds.S | 5 | ||||
| -rw-r--r-- | arch/powerpc/platforms/iseries/Makefile | 5 | ||||
| -rw-r--r-- | arch/powerpc/platforms/iseries/dt.c | 96 |
3 files changed, 66 insertions, 40 deletions
diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S index fe79c2584cb..8b25953dc4f 100644 --- a/arch/powerpc/kernel/vmlinux.lds.S +++ b/arch/powerpc/kernel/vmlinux.lds.S @@ -93,6 +93,11 @@ SECTIONS __ptov_table_begin = .; *(.ptov_fixup); __ptov_table_end = .; +#ifdef CONFIG_PPC_ISERIES + __dt_strings_start = .; + *(.dt_strings); + __dt_strings_end = .; +#endif } . = ALIGN(16); diff --git a/arch/powerpc/platforms/iseries/Makefile b/arch/powerpc/platforms/iseries/Makefile index 32306214a30..dee4eb4d8be 100644 --- a/arch/powerpc/platforms/iseries/Makefile +++ b/arch/powerpc/platforms/iseries/Makefile @@ -1,8 +1,11 @@ EXTRA_CFLAGS += -mno-minimal-toc -obj-y += hvlog.o hvlpconfig.o lpardata.o setup.o dt.o mf.o lpevents.o \ +obj-y += hvlog.o hvlpconfig.o lpardata.o setup.o dt_mod.o mf.o lpevents.o \ hvcall.o proc.o htab.o iommu.o misc.o irq.o obj-$(CONFIG_PCI) += pci.o vpdinfo.o obj-$(CONFIG_SMP) += smp.o obj-$(CONFIG_VIOPATH) += viopath.o obj-$(CONFIG_MODULES) += ksyms.o + +$(obj)/dt_mod.o: $(obj)/dt.o + @$(OBJCOPY) --rename-section .rodata.str1.8=.dt_strings $(obj)/dt.o $(obj)/dt_mod.o diff --git a/arch/powerpc/platforms/iseries/dt.c b/arch/powerpc/platforms/iseries/dt.c index 93d4233e73e..0371329f82e 100644 --- a/arch/powerpc/platforms/iseries/dt.c +++ b/arch/powerpc/platforms/iseries/dt.c @@ -30,6 +30,7 @@ #include <asm/page.h> #include <asm/cputable.h> #include <asm/abs_addr.h> +#include <asm/system.h> #include <asm/iseries/hv_types.h> #include <asm/iseries/hv_lp_config.h> #include <asm/iseries/hv_call_xm.h> @@ -47,6 +48,9 @@ #define DBG(fmt...) #endif +extern char __dt_strings_start[]; +extern char __dt_strings_end[]; + struct blob { unsigned char data[PAGE_SIZE * 2]; unsigned long next; @@ -55,26 +59,34 @@ struct blob { struct iseries_flat_dt { struct boot_param_header header; u64 reserve_map[2]; - struct blob dt; - struct blob strings; + struct blob *dt; }; -static struct iseries_flat_dt iseries_dt; +static struct iseries_flat_dt *iseries_dt; -static void __init dt_init(struct iseries_flat_dt *dt) +static struct iseries_flat_dt * __init dt_init(void) { + struct iseries_flat_dt *dt; + unsigned long str_len; + + str_len = __dt_strings_end - __dt_strings_start; + dt = (struct iseries_flat_dt *)ALIGN(klimit, 8); dt->header.off_mem_rsvmap = offsetof(struct iseries_flat_dt, reserve_map); - dt->header.off_dt_struct = offsetof(struct iseries_flat_dt, dt); - dt->header.off_dt_strings = offsetof(struct iseries_flat_dt, strings); - dt->header.totalsize = sizeof(struct iseries_flat_dt); - dt->header.dt_strings_size = sizeof(struct blob); + dt->header.off_dt_strings = ALIGN(sizeof(*dt), 8); + dt->header.off_dt_struct = dt->header.off_dt_strings + + ALIGN(str_len, 8); + dt->dt = (struct blob *)((unsigned long)dt + dt->header.off_dt_struct); + klimit = ALIGN((unsigned long)(dt->dt) + sizeof(struct blob), 8); + dt->header.totalsize = klimit - (unsigned long)dt; + dt->header.dt_strings_size = str_len; /* There is no notion of hardware cpu id on iSeries */ dt->header.boot_cpuid_phys = smp_processor_id(); - dt->dt.next = (unsigned long)&dt->dt.data; - dt->strings.next = (unsigned long)&dt->strings.data; + dt->dt->next = (unsigned long)&dt->dt->data; + memcpy((char *)dt + dt->header.off_dt_strings, __dt_strings_start, + str_len); dt->header.magic = OF_DT_HEADER; dt->header.version = 0x10; @@ -82,6 +94,8 @@ static void __init dt_init(struct iseries_flat_dt *dt) dt->reserve_map[0] = 0; dt->reserve_map[1] = 0; + + return dt; } static void __init dt_check_blob(struct blob *b) @@ -94,19 +108,19 @@ static void __init dt_check_blob(struct blob *b) static void __init dt_push_u32(struct iseries_flat_dt *dt, u32 value) { - *((u32*)dt->dt.next) = value; - dt->dt.next += sizeof(u32); + *((u32*)dt->dt->next) = value; + dt->dt->next += sizeof(u32); - dt_check_blob(&dt->dt); + dt_check_blob(dt->dt); } #ifdef notyet static void __init dt_push_u64(struct iseries_flat_dt *dt, u64 value) { - *((u64*)dt->dt.next) = value; - dt->dt.next += sizeof(u64); + *((u64*)dt->dt->next) = value; + dt->dt->next += sizeof(u64); - dt_check_blob(&dt->dt); + dt_check_blob(dt->dt); } #endif @@ -125,7 +139,7 @@ static unsigned long __init dt_push_bytes(struct blob *blob, char *data, int len static void __init dt_start_node(struct iseries_flat_dt *dt, char *name) { dt_push_u32(dt, OF_DT_BEGIN_NODE); - dt_push_bytes(&dt->dt, name, strlen(name) + 1); + dt_push_bytes(dt->dt, name, strlen(name) + 1); } #define dt_end_node(dt) dt_push_u32(dt, OF_DT_END_NODE) @@ -140,14 +154,13 @@ static void __init dt_prop(struct iseries_flat_dt *dt, char *name, /* Length of the data */ dt_push_u32(dt, len); - /* Put the property name in the string blob. */ - offset = dt_push_bytes(&dt->strings, name, strlen(name) + 1); + offset = name - __dt_strings_start; /* The offset of the properties name in the string blob. */ dt_push_u32(dt, (u32)offset); /* The actual data. */ - dt_push_bytes(&dt->dt, data, len); + dt_push_bytes(dt->dt, data, len); } static void __init dt_prop_str(struct iseries_flat_dt *dt, char *name, @@ -579,40 +592,45 @@ static void __init dt_pci_devices(struct iseries_flat_dt *dt) } } +static void dt_finish(struct iseries_flat_dt *dt) +{ + dt_push_u32(dt, OF_DT_END); +} + void * __init build_flat_dt(unsigned long phys_mem_size) { u64 tmp[2]; - dt_init(&iseries_dt); + iseries_dt = dt_init(); - dt_start_node(&iseries_dt, ""); + dt_start_node(iseries_dt, ""); - dt_prop_u32(&iseries_dt, "#address-cells", 2); - dt_prop_u32(&iseries_dt, "#size-cells", 2); - dt_model(&iseries_dt); + dt_prop_u32(iseries_dt, "#address-cells", 2); + dt_prop_u32(iseries_dt, "#size-cells", 2); + dt_model(iseries_dt); /* /memory */ - dt_start_node(&iseries_dt, "memory@0"); - dt_prop_str(&iseries_dt, "name", "memory"); - dt_prop_str(&iseries_dt, "device_type", "memory"); + dt_start_node(iseries_dt, "memory@0"); + dt_prop_str(iseries_dt, "name", "memory"); + dt_prop_str(iseries_dt, "device_type", "memory"); tmp[0] = 0; tmp[1] = phys_mem_size; - dt_prop_u64_list(&iseries_dt, "reg", tmp, 2); - dt_end_node(&iseries_dt); + dt_prop_u64_list(iseries_dt, "reg", tmp, 2); + dt_end_node(iseries_dt); /* /chosen */ - dt_start_node(&iseries_dt, "chosen"); - dt_prop_str(&iseries_dt, "bootargs", cmd_line); - dt_end_node(&iseries_dt); + dt_start_node(iseries_dt, "chosen"); + dt_prop_str(iseries_dt, "bootargs", cmd_line); + dt_end_node(iseries_dt); - dt_cpus(&iseries_dt); + dt_cpus(iseries_dt); - dt_vdevices(&iseries_dt); - dt_pci_devices(&iseries_dt); + dt_vdevices(iseries_dt); + dt_pci_devices(iseries_dt); - dt_end_node(&iseries_dt); + dt_end_node(iseries_dt); - dt_push_u32(&iseries_dt, OF_DT_END); + dt_finish(iseries_dt); - return &iseries_dt; + return iseries_dt; } |