From 41999295b6c25d799dacbbca089fdbc19f6d60f5 Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Wed, 18 Oct 2006 15:53:20 +1000 Subject: [PATCH] [POWERPC] Move iSeries initrd logic into device tree Remove the iSeries initrd logic, instead just store the initrd location and size in the device tree so generic code can do the rest for us. The iSeries code had a "feature" which the generic code lacks, ie. if the compressed initrd is bigger than the configured ram disk size, we make the ram disk size bigger. That's bogus, as the compressed size of the initrd tells us nothing about how big the ram disk needs to be. If the ram disk isn't big enough you just need to make CONFIG_BLK_DEV_RAM_SIZE larger. Signed-off-by: Michael Ellerman Signed-off-by: Paul Mackerras --- arch/powerpc/platforms/iseries/dt.c | 15 ++++++++++-- arch/powerpc/platforms/iseries/setup.c | 32 -------------------------- 2 files changed, 13 insertions(+), 34 deletions(-) diff --git a/arch/powerpc/platforms/iseries/dt.c b/arch/powerpc/platforms/iseries/dt.c index e305deee7f44..9e8a334a518a 100644 --- a/arch/powerpc/platforms/iseries/dt.c +++ b/arch/powerpc/platforms/iseries/dt.c @@ -41,6 +41,7 @@ #include "call_pci.h" #include "pci.h" #include "it_exp_vpd_panel.h" +#include "naca.h" #ifdef DEBUG #define DBG(fmt...) udbg_printf(fmt) @@ -205,13 +206,11 @@ static void __init dt_prop_u32(struct iseries_flat_dt *dt, const char *name, dt_prop(dt, name, &data, sizeof(u32)); } -#ifdef notyet static void __init dt_prop_u64(struct iseries_flat_dt *dt, const char *name, u64 data) { dt_prop(dt, name, &data, sizeof(u64)); } -#endif static void __init dt_prop_u64_list(struct iseries_flat_dt *dt, const char *name, u64 *data, int n) @@ -306,6 +305,17 @@ static void __init dt_model(struct iseries_flat_dt *dt) dt_prop_u32(dt, "ibm,partition-no", HvLpConfig_getLpIndex()); } +static void __init dt_initrd(struct iseries_flat_dt *dt) +{ +#ifdef CONFIG_BLK_DEV_INITRD + if (naca.xRamDisk) { + dt_prop_u64(dt, "linux,initrd-start", (u64)naca.xRamDisk); + dt_prop_u64(dt, "linux,initrd-end", + (u64)naca.xRamDisk + naca.xRamDiskSize * HW_PAGE_SIZE); + } +#endif +} + static void __init dt_do_vdevice(struct iseries_flat_dt *dt, const char *name, u32 reg, int unit, const char *type, const char *compat, int end) @@ -641,6 +651,7 @@ void * __init build_flat_dt(unsigned long phys_mem_size) /* /chosen */ dt_start_node(iseries_dt, "chosen"); dt_prop_str(iseries_dt, "bootargs", cmd_line); + dt_initrd(iseries_dt); dt_end_node(iseries_dt); dt_cpus(iseries_dt); diff --git a/arch/powerpc/platforms/iseries/setup.c b/arch/powerpc/platforms/iseries/setup.c index a0ff7ba7d666..08d14734617a 100644 --- a/arch/powerpc/platforms/iseries/setup.c +++ b/arch/powerpc/platforms/iseries/setup.c @@ -21,7 +21,6 @@ #include #include #include -#include #include #include #include @@ -80,8 +79,6 @@ extern void iSeries_pci_final_fixup(void); static void iSeries_pci_final_fixup(void) { } #endif -extern int rd_size; /* Defined in drivers/block/rd.c */ - extern unsigned long iSeries_recal_tb; extern unsigned long iSeries_recal_titan; @@ -295,24 +292,6 @@ static void __init iSeries_init_early(void) { DBG(" -> iSeries_init_early()\n"); -#if defined(CONFIG_BLK_DEV_INITRD) - /* - * If the init RAM disk has been configured and there is - * a non-zero starting address for it, set it up - */ - if (naca.xRamDisk) { - initrd_start = (unsigned long)__va(naca.xRamDisk); - initrd_end = initrd_start + naca.xRamDiskSize * HW_PAGE_SIZE; - initrd_below_start_ok = 1; // ramdisk in kernel space - ROOT_DEV = Root_RAM0; - if (((rd_size * 1024) / HW_PAGE_SIZE) < naca.xRamDiskSize) - rd_size = (naca.xRamDiskSize * HW_PAGE_SIZE) / 1024; - } else -#endif /* CONFIG_BLK_DEV_INITRD */ - { - /* ROOT_DEV = MKDEV(VIODASD_MAJOR, 1); */ - } - iSeries_recal_tb = get_tb(); iSeries_recal_titan = HvCallXm_loadTod(); @@ -331,17 +310,6 @@ static void __init iSeries_init_early(void) mf_init(); - /* If we were passed an initrd, set the ROOT_DEV properly if the values - * look sensible. If not, clear initrd reference. - */ -#ifdef CONFIG_BLK_DEV_INITRD - if (initrd_start >= KERNELBASE && initrd_end >= KERNELBASE && - initrd_end > initrd_start) - ROOT_DEV = Root_RAM0; - else - initrd_start = initrd_end = 0; -#endif /* CONFIG_BLK_DEV_INITRD */ - DBG(" <- iSeries_init_early()\n"); }