Merge Paulus' tree

[karo-tx-linux.git] / arch / powerpc / platforms / iseries / setup.c

diff --git a/arch/powerpc/platforms/iseries/setup.c b/arch/powerpc/platforms/iseries/setup.c
index 93852c2ee5de3c15870fc854c0eccbf7d51eb7e9..fda712b421687f2b910dbc99c47de85644449057 100644 (file)
--- a/arch/powerpc/platforms/iseries/setup.c
+++ b/arch/powerpc/platforms/iseries/setup.c
@@ -27,6 +27,7 @@
 #include <linux/kdev_t.h>
 #include <linux/major.h>
 #include <linux/root_dev.h>
+#include <linux/kernel.h>
 
 #include <asm/processor.h>
 #include <asm/machdep.h>
@@ -40,19 +41,19 @@
 #include <asm/firmware.h>
 
 #include <asm/time.h>
-#include <asm/naca.h>
 #include <asm/paca.h>
 #include <asm/cache.h>
 #include <asm/sections.h>
 #include <asm/abs_addr.h>
-#include <asm/iSeries/HvLpConfig.h>
-#include <asm/iSeries/HvCallEvent.h>
-#include <asm/iSeries/HvCallXm.h>
-#include <asm/iSeries/ItLpQueue.h>
-#include <asm/iSeries/mf.h>
-#include <asm/iSeries/HvLpEvent.h>
-#include <asm/iSeries/LparMap.h>
-
+#include <asm/iseries/hv_lp_config.h>
+#include <asm/iseries/hv_call_event.h>
+#include <asm/iseries/hv_call_xm.h>
+#include <asm/iseries/it_lp_queue.h>
+#include <asm/iseries/mf.h>
+#include <asm/iseries/hv_lp_event.h>
+#include <asm/iseries/lpar_map.h>
+
+#include "naca.h"
 #include "setup.h"
 #include "irq.h"
 #include "vpd_areas.h"
@@ -73,8 +74,8 @@ extern void hvlog(char *fmt, ...);
 extern void ppcdbg_initialize(void);
 
 static void build_iSeries_Memory_Map(void);
-static int iseries_shared_idle(void);
-static int iseries_dedicated_idle(void);
+static void iseries_shared_idle(void);
+static void iseries_dedicated_idle(void);
 #ifdef CONFIG_PCI
 extern void iSeries_pci_final_fixup(void);
 #else
@@ -94,6 +95,8 @@ extern unsigned long iSeries_recal_titan;
 
 static int mf_initialized;
 
+static unsigned long cmd_mem_limit;
+
 struct MemoryBlock {
        unsigned long absStart;
        unsigned long absEnd;
@@ -302,8 +305,6 @@ static void __init iSeries_get_cmdline(void)
 
 static void __init iSeries_init_early(void)
 {
-       extern unsigned long memory_limit;
-
        DBG(" -> iSeries_init_early()\n");
 
        ppc64_firmware_features = FW_FEATURE_ISERIES;
@@ -343,23 +344,6 @@ static void __init iSeries_init_early(void)
         */
        iommu_init_early_iSeries();
 
-       iSeries_get_cmdline();
-
-       /* Save unparsed command line copy for /proc/cmdline */
-       strlcpy(saved_command_line, cmd_line, COMMAND_LINE_SIZE);
-
-       /* Parse early parameters, in particular mem=x */
-       parse_early_param();
-
-       if (memory_limit) {
-               if (memory_limit < systemcfg->physicalMemorySize)
-                       systemcfg->physicalMemorySize = memory_limit;
-               else {
-                       printk("Ignoring mem=%lu >= ram_top.\n", memory_limit);
-                       memory_limit = 0;
-               }
-       }
-
        /* Initialize machine-dependency vectors */
 #ifdef CONFIG_SMP
        smp_init_iSeries();
@@ -587,7 +571,7 @@ static void __init iSeries_setup_arch(void)
        printk("Processor version = %x\n", systemcfg->processor);
 }
 
-static void iSeries_get_cpuinfo(struct seq_file *m)
+static void iSeries_show_cpuinfo(struct seq_file *m)
 {
        seq_printf(m, "machine\t\t: 64-bit iSeries Logical Partition\n");
 }
@@ -693,7 +677,7 @@ static void yield_shared_processor(void)
        process_iSeries_events();
 }
 
-static int iseries_shared_idle(void)
+static void iseries_shared_idle(void)
 {
        while (1) {
                while (!need_resched() && !hvlpevent_is_pending()) {
@@ -715,11 +699,9 @@ static int iseries_shared_idle(void)
 
                schedule();
        }
-
-       return 0;
 }
 
-static int iseries_dedicated_idle(void)
+static void iseries_dedicated_idle(void)
 {
        long oldval;
 
@@ -749,8 +731,6 @@ static int iseries_dedicated_idle(void)
                ppc64_runlatch_on();
                schedule();
        }
-
-       return 0;
 }
 
 #ifndef CONFIG_PCI
@@ -764,7 +744,7 @@ static int __init iseries_probe(int platform)
 
 struct machdep_calls __initdata iseries_md = {
        .setup_arch     = iSeries_setup_arch,
-       .get_cpuinfo    = iSeries_get_cpuinfo,
+       .show_cpuinfo   = iSeries_show_cpuinfo,
        .init_IRQ       = iSeries_init_IRQ,
        .get_irq        = iSeries_get_irq,
        .init_early     = iSeries_init_early,
@@ -977,6 +957,8 @@ void build_flat_dt(struct iseries_flat_dt *dt)
        /* /chosen */
        dt_start_node(dt, "chosen");
        dt_prop_u32(dt, "linux,platform", PLATFORM_ISERIES_LPAR);
+       if (cmd_mem_limit)
+               dt_prop_u64(dt, "linux,memory-limit", cmd_mem_limit);
        dt_end_node(dt);
 
        dt_cpus(dt);
@@ -996,7 +978,27 @@ void * __init iSeries_early_setup(void)
         */
        build_iSeries_Memory_Map();
 
+       iSeries_get_cmdline();
+
+       /* Save unparsed command line copy for /proc/cmdline */
+       strlcpy(saved_command_line, cmd_line, COMMAND_LINE_SIZE);
+
+       /* Parse early parameters, in particular mem=x */
+       parse_early_param();
+
        build_flat_dt(&iseries_dt);
 
        return (void *) __pa(&iseries_dt);
 }
+
+/*
+ * On iSeries we just parse the mem=X option from the command line.
+ * On pSeries it's a bit more complicated, see prom_init_mem()
+ */
+static int __init early_parsemem(char *p)
+{
+       if (p)
+               cmd_mem_limit = ALIGN(memparse(p, &p), PAGE_SIZE);
+       return 0;
+}
+early_param("mem", early_parsemem);