From 6ca7636c8f52560e732cdd5b1c7829cda5aa2bde Mon Sep 17 00:00:00 2001 From: "arch import user (historical)" Date: Wed, 6 Jul 2005 17:17:25 +0000 Subject: Revision: linuxbios@linuxbios.org--devel/freebios--devel--2.0--patch-51 Creator: Yinghai Lu cache_as_ram for AMD and some intel git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1967 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1 --- src/mainboard/tyan/s2895/Config.lb | 117 +++++-- src/mainboard/tyan/s2895/Options.lb | 25 +- src/mainboard/tyan/s2895/cache_as_ram_auto.c | 492 +++++++++++++++++++++++++++ 3 files changed, 595 insertions(+), 39 deletions(-) create mode 100644 src/mainboard/tyan/s2895/cache_as_ram_auto.c (limited to 'src/mainboard/tyan/s2895') diff --git a/src/mainboard/tyan/s2895/Config.lb b/src/mainboard/tyan/s2895/Config.lb index 09448facc8..3bf8508369 100644 --- a/src/mainboard/tyan/s2895/Config.lb +++ b/src/mainboard/tyan/s2895/Config.lb @@ -44,27 +44,46 @@ driver mainboard.o if HAVE_MP_TABLE object mptable.o end if HAVE_PIRQ_TABLE object irq_tables.o end #object reset.o +if USE_DCACHE_RAM -## -## Romcc output -## -makerule ./failover.E - depends "$(MAINBOARD)/failover.c ./romcc" - action "./romcc -E -O --label-prefix=failover -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/failover.c -o $@" -end + if CONFIG_USE_INIT + makerule ./auto.o + depends "$(MAINBOARD)/cache_as_ram_auto.c option_table.h" + action "$(CC) -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/cache_as_ram_auto.c -Os -nostdinc -nostdlib -fno-builtin -Wall -c -o auto.o" + end + else + makerule ./auto.inc + depends "$(MAINBOARD)/cache_as_ram_auto.c option_table.h" + action "$(CC) -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/cache_as_ram_auto.c -Os -nostdinc -nostdlib -fno-builtin -Wall -c -S -o $@" + action "perl -e 's/.rodata/.rom.data/g' -pi $@" + action "perl -e 's/.text/.section .rom.text/g' -pi $@" + end + end -makerule ./failover.inc - depends "$(MAINBOARD)/failover.c ./romcc" - action "./romcc -O --label-prefix=failover -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/failover.c -o $@" -end +else + ## + ## Romcc output + ## + makerule ./failover.E + depends "$(MAINBOARD)/failover.c ./romcc" + action "./romcc -E -O --label-prefix=failover -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/failover.c -o $@" + end + + makerule ./failover.inc + depends "$(MAINBOARD)/failover.c ./romcc" + action "./romcc -O --label-prefix=failover -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/failover.c -o $@" + end + + makerule ./auto.E + depends "$(MAINBOARD)/auto.c option_table.h ./romcc" + action "./romcc -E -mcpu=k8 -O2 -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/auto.c -o $@" + end + + makerule ./auto.inc + depends "$(MAINBOARD)/auto.c option_table.h ./romcc" + action "./romcc -mcpu=k8 -O2 -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/auto.c -o $@" + end -makerule ./auto.E - depends "$(MAINBOARD)/auto.c option_table.h ./romcc" - action "./romcc -E -mcpu=k8 -O2 -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/auto.c -o $@" -end -makerule ./auto.inc - depends "$(MAINBOARD)/auto.c option_table.h ./romcc" - action "./romcc -mcpu=k8 -O2 -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/auto.c -o $@" end ## @@ -73,7 +92,16 @@ end mainboardinit cpu/x86/16bit/entry16.inc mainboardinit cpu/x86/32bit/entry32.inc ldscript /cpu/x86/16bit/entry16.lds -ldscript /cpu/x86/32bit/entry32.lds +if USE_DCACHE_RAM + if CONFIG_USE_INIT + ldscript /cpu/x86/32bit/entry32.lds + end + + if CONFIG_USE_INIT + ldscript /cpu/amd/car/cache_as_ram.lds + end +end + ## ## Build our reset vector (This is where linuxBIOS is entered) @@ -86,8 +114,11 @@ else ldscript /cpu/x86/32bit/reset32.lds end -### Should this be in the northbridge code? -mainboardinit arch/i386/lib/cpu_reset.inc +if USE_DCACHE_RAM +else + ### Should this be in the northbridge code? + mainboardinit arch/i386/lib/cpu_reset.inc +end ## ## Include an id string (For safe flashing) @@ -103,29 +134,49 @@ if USE_FALLBACK_IMAGE ldscript /southbridge/nvidia/ck804/romstrap.lds end + + +if USE_DCACHE_RAM + ## + ## Setup Cache-As-Ram + ## + mainboardinit cpu/amd/car/cache_as_ram.inc +end + ### ### This is the early phase of linuxBIOS startup ### Things are delicate and we test to see if we should ### failover to another image. ### if USE_FALLBACK_IMAGE - ldscript /arch/i386/lib/failover.lds - mainboardinit ./failover.inc + ldscript /arch/i386/lib/failover.lds + if USE_DCACHE_RAM + else + mainboardinit ./failover.inc + end end -### -### O.k. We aren't just an intermediary anymore! -### - ## ## Setup RAM ## -mainboardinit cpu/x86/fpu/enable_fpu.inc -mainboardinit cpu/x86/mmx/enable_mmx.inc -mainboardinit cpu/x86/sse/enable_sse.inc -mainboardinit ./auto.inc -mainboardinit cpu/x86/sse/disable_sse.inc -mainboardinit cpu/x86/mmx/disable_mmx.inc +if USE_DCACHE_RAM + + if CONFIG_USE_INIT + initobject auto.o + else + mainboardinit ./auto.inc + end + +else + # ROMCC + mainboardinit cpu/x86/fpu/enable_fpu.inc + mainboardinit cpu/x86/mmx/enable_mmx.inc + mainboardinit cpu/x86/sse/enable_sse.inc + mainboardinit ./auto.inc + mainboardinit cpu/x86/sse/disable_sse.inc + mainboardinit cpu/x86/mmx/disable_mmx.inc + +end ## ## Include the secondary Configuration files diff --git a/src/mainboard/tyan/s2895/Options.lb b/src/mainboard/tyan/s2895/Options.lb index 22812e9a20..e2d220201b 100644 --- a/src/mainboard/tyan/s2895/Options.lb +++ b/src/mainboard/tyan/s2895/Options.lb @@ -59,6 +59,11 @@ uses K8_E0_MEM_HOLE_SIZEK uses CK804_DEVN_BASE +uses USE_DCACHE_RAM +uses DCACHE_RAM_BASE +uses DCACHE_RAM_SIZE +uses CONFIG_USE_INIT + ## ROM_SIZE is the size of boot ROM that this board will use. #512K bytes default ROM_SIZE=524288 @@ -85,9 +90,9 @@ default HAVE_FALLBACK_BOOT=1 ## default HAVE_HARD_RESET=1 -default HARD_RESET_BUS=1 -default HARD_RESET_DEVICE=4 -default HARD_RESET_FUNCTION=0 +#default HARD_RESET_BUS=1 +#default HARD_RESET_DEVICE=4 +#default HARD_RESET_FUNCTION=0 ## ## Build code to export a programmable irq routing table @@ -135,6 +140,14 @@ default CK804_DEVN_BASE=0 default CONFIG_CONSOLE_VGA=1 default CONFIG_PCI_ROM_RUN=1 +## +## enable CACHE_AS_RAM specifics +## +default USE_DCACHE_RAM=1 +default DCACHE_RAM_BASE=0xcf000 +default DCACHE_RAM_SIZE=0x1000 +default CONFIG_USE_INIT=1 + ## ## Build code to setup a generic IOAPIC ## @@ -143,8 +156,8 @@ default CONFIG_IOAPIC=1 ## ## Clean up the motherboard id strings ## -default MAINBOARD_PART_NUMBER="Tyan" -default MAINBOARD_VENDOR="s2895" +default MAINBOARD_PART_NUMBER="s2895" +default MAINBOARD_VENDOR="Tyan" default MAINBOARD_PCI_SUBSYSTEM_VENDOR_ID=0x10f1 default MAINBOARD_PCI_SUBSYSTEM_DEVICE_ID=0x2895 @@ -233,7 +246,7 @@ default TTYS0_LCS=0x3 ## SPEW 9 Way too many details ## Request this level of debugging output -default DEFAULT_CONSOLE_LOGLEVEL=7 +default DEFAULT_CONSOLE_LOGLEVEL=8 ## At a maximum only compile in this level of debugging default MAXIMUM_CONSOLE_LOGLEVEL=8 diff --git a/src/mainboard/tyan/s2895/cache_as_ram_auto.c b/src/mainboard/tyan/s2895/cache_as_ram_auto.c new file mode 100644 index 0000000000..dfe11ae546 --- /dev/null +++ b/src/mainboard/tyan/s2895/cache_as_ram_auto.c @@ -0,0 +1,492 @@ +#define ASSEMBLY 1 +#define __ROMCC__ + +#include +#include +#include +#include +#include +#include +#include "option_table.h" +#include "pc80/mc146818rtc_early.c" +#include "pc80/serial.c" +#include "arch/i386/lib/console.c" +#include "ram/ramtest.c" + + +#include "northbridge/amd/amdk8/cpu_rev.c" +#define K8_HT_FREQ_1G_SUPPORT 0 +#include "northbridge/amd/amdk8/incoherent_ht.c" +#include "southbridge/nvidia/ck804/ck804_early_smbus.c" +#include "northbridge/amd/amdk8/raminit.h" +#include "cpu/amd/model_fxx/apic_timer.c" +#include "lib/delay.c" + +#if CONFIG_USE_INIT == 0 +#include "lib/memcpy.c" +#endif + +#include "cpu/x86/lapic/boot_cpu.c" +#include "northbridge/amd/amdk8/reset_test.c" +#include "northbridge/amd/amdk8/debug.c" +#include "superio/smsc/lpc47b397/lpc47b397_early_serial.c" + +#include "cpu/amd/mtrr/amd_earlymtrr.c" +#include "cpu/x86/bist.h" + +#include "superio/smsc/lpc47b397/lpc47b397_early_gpio.c" + +#include "northbridge/amd/amdk8/setup_resource_map.c" + +#define SERIAL_DEV PNP_DEV(0x2e, LPC47B397_SP1) + +static void hard_reset(void) +{ + set_bios_reset(); + + /* full reset */ + outb(0x0a, 0x0cf9); + outb(0x0e, 0x0cf9); +} + +static void soft_reset(void) +{ + set_bios_reset(); +#if 1 + /* link reset */ + outb(0x02, 0x0cf9); + outb(0x06, 0x0cf9); +#endif +} + +static void memreset_setup(void) +{ +} + +static void memreset(int controllers, const struct mem_controller *ctrl) +{ +} + +#define SUPERIO_GPIO_DEV PNP_DEV(0x2e, LPC47B397_RT) + +#define SUPERIO_GPIO_IO_BASE 0x400 + +static void sio_gpio_setup(void){ + + unsigned value; + + +#if 1 + /*Enable onboard scsi*/ + lpc47b397_gpio_offset_out(SUPERIO_GPIO_IO_BASE, 0x2c, (1<<7)|(0<<2)|(0<<1)|(0<<0)); // GP21, offset 0x2c, DISABLE_SCSI_L + value = lpc47b397_gpio_offset_in(SUPERIO_GPIO_IO_BASE, 0x4c); + lpc47b397_gpio_offset_out(SUPERIO_GPIO_IO_BASE, 0x4c, (value|(1<<1))); +#endif + +} + +static inline void activate_spd_rom(const struct mem_controller *ctrl) +{ + /* nothing to do */ +} + +static inline int spd_read_byte(unsigned device, unsigned address) +{ + return smbus_read_byte(device, address); +} + +#define K8_4RANK_DIMM_SUPPORT 1 + +#include "northbridge/amd/amdk8/raminit.c" +#if 0 + #define ENABLE_APIC_EXT_ID 1 + #define APIC_ID_OFFSET 0x10 + #define LIFT_BSP_APIC_ID 0 +#else + #define ENABLE_APIC_EXT_ID 0 +#endif +#include "northbridge/amd/amdk8/coherent_ht.c" +#include "sdram/generic_sdram.c" + + /* tyan does not want the default */ +#include "resourcemap.c" + +#if CONFIG_LOGICAL_CPUS==1 +#define SET_NB_CFG_54 1 +#include "cpu/amd/dualcore/dualcore.c" +#endif + +#define FIRST_CPU 1 +#define SECOND_CPU 1 +#define TOTAL_CPUS (FIRST_CPU + SECOND_CPU) + +#define CK804_NUM 2 +//#define CK804B_BUSN 0x80 +#define CK804B_BUSN 0xc +#define CK804_USE_NIC 1 +#define CK804_USE_ACI 1 + +#include "southbridge/nvidia/ck804/ck804_early_setup_ss.h" + +//set GPIO to input mode +#define CK804_MB_SETUP \ + RES_PORT_IO_8, SYSCTRL_IO_BASE + 0xc0+ 5, ~(0xff),((0<<4)|(0<<2)|(0<<0)),/* M9,GPIO6, PCIXB2_PRSNT1_L*/ \ + RES_PORT_IO_8, SYSCTRL_IO_BASE + 0xc0+15, ~(0xff),((0<<4)|(0<<2)|(0<<0)),/* M8,GPIO16, PCIXB2_PRSNT2_L*/ \ + RES_PORT_IO_8, SYSCTRL_IO_BASE + 0xc0+44, ~(0xff),((0<<4)|(0<<2)|(0<<0)),/* P5,GPIO45, PCIXA_PRSNT1_L*/ \ + RES_PORT_IO_8, SYSCTRL_IO_BASE + 0xc0+ 7, ~(0xff),((0<<4)|(0<<2)|(0<<0)),/* M5,GPIO8, PCIXA_PRSNT2_L*/ \ + RES_PORT_IO_8, SYSCTRL_IO_BASE + 0xc0+16, ~(0xff),((0<<4)|(0<<2)|(0<<0)),/* K4,GPIO17, PCIXB_PRSNT1_L*/ \ + RES_PORT_IO_8, SYSCTRL_IO_BASE + 0xc0+45, ~(0xff),((0<<4)|(0<<2)|(0<<0)),/* P7,GPIO46, PCIXB_PRSNT2_L*/ + +#include "southbridge/nvidia/ck804/ck804_early_setup.c" + +#include "cpu/amd/car/copy_and_run.c" + +#if USE_FALLBACK_IMAGE == 1 + +#include "southbridge/nvidia/ck804/ck804_enable_rom.c" +#include "northbridge/amd/amdk8/early_ht.c" + + +static void sio_setup(void) +{ + + unsigned value; + uint32_t dword; + uint8_t byte; + + + pci_write_config32(PCI_DEV(0, CK804_DEVN_BASE+1, 0), 0xac, 0x047f0400); + + byte = pci_read_config32(PCI_DEV(0, CK804_DEVN_BASE+1 , 0), 0x7b); + byte |= 0x20; + pci_write_config8(PCI_DEV(0, CK804_DEVN_BASE+1 , 0), 0x7b, byte); + + dword = pci_read_config32(PCI_DEV(0, CK804_DEVN_BASE+1 , 0), 0xa0); + dword |= (1<<29)|(1<<0); + pci_write_config32(PCI_DEV(0, CK804_DEVN_BASE+1 , 0), 0xa0, dword); + +#if 1 + lpc47b397_enable_serial(SUPERIO_GPIO_DEV, SUPERIO_GPIO_IO_BASE); + + value = lpc47b397_gpio_offset_in(SUPERIO_GPIO_IO_BASE, 0x77); + value &= 0xbf; + lpc47b397_gpio_offset_out(SUPERIO_GPIO_IO_BASE, 0x77, value); +#endif + +} + +void real_main(unsigned long bist); + +void amd64_main(unsigned long bist) +{ +#if CONFIG_LOGICAL_CPUS==1 + struct node_core_id id; +#else + unsigned nodeid; +#endif + /* Make cerain my local apic is useable */ +// enable_lapic(); + +#if CONFIG_LOGICAL_CPUS==1 + id = get_node_core_id_x(); + /* Is this a cpu only reset? */ + if (cpu_init_detected(id.nodeid)) { +#else +// nodeid = lapicid() & 0xf; + nodeid = get_node_id(); + /* Is this a cpu only reset? */ + if (cpu_init_detected(nodeid)) { +#endif + if (last_boot_normal()) { + goto normal_image; + } else { + goto cpu_reset; + } + } + + /* Is this a secondary cpu? */ + if (!boot_cpu()) { + if (last_boot_normal()) { + goto normal_image; + } else { + goto fallback_image; + } + } + + /* Nothing special needs to be done to find bus 0 */ + /* Allow the HT devices to be found */ + + enumerate_ht_chain(); + + sio_setup(); + + /* Setup the ck804 */ + ck804_enable_rom(); + + /* Is this a deliberate reset by the bios */ + if (bios_reset_detected() && last_boot_normal()) { + goto normal_image; + } + /* This is the primary cpu how should I boot? */ + else if (do_normal_boot()) { + goto normal_image; + } + else { + goto fallback_image; + } + normal_image: + __asm__ volatile ("jmp __normal_image" + : /* outputs */ + : "a" (bist) /* inputs */ + ); + cpu_reset: +#if 0 + //CPU reset will reset memtroller ??? + asm volatile ("jmp __cpu_reset" + : /* outputs */ + : "a"(bist) /* inputs */ + ); +#endif + + fallback_image: + real_main(bist); +} +void real_main(unsigned long bist) +#else +void amd64_main(unsigned long bist) +#endif +{ + static const struct mem_controller cpu[] = { +#if FIRST_CPU + { + .node_id = 0, + .f0 = PCI_DEV(0, 0x18, 0), + .f1 = PCI_DEV(0, 0x18, 1), + .f2 = PCI_DEV(0, 0x18, 2), + .f3 = PCI_DEV(0, 0x18, 3), + .channel0 = { (0xa<<3)|0, (0xa<<3)|2, 0, 0 }, + .channel1 = { (0xa<<3)|1, (0xa<<3)|3, 0, 0 }, + }, +#endif +#if SECOND_CPU + { + .node_id = 1, + .f0 = PCI_DEV(0, 0x19, 0), + .f1 = PCI_DEV(0, 0x19, 1), + .f2 = PCI_DEV(0, 0x19, 2), + .f3 = PCI_DEV(0, 0x19, 3), + .channel0 = { (0xa<<3)|4, (0xa<<3)|6, 0, 0 }, + .channel1 = { (0xa<<3)|5, (0xa<<3)|7, 0, 0 }, + }, +#endif + }; + + int needs_reset; + + unsigned cpu_reset = 0; + + if (bist == 0) { +#if CONFIG_LOGICAL_CPUS==1 + struct node_core_id id; +#else + unsigned nodeid; +#endif + /* Skip this if there was a built in self test failure */ +// amd_early_mtrr_init(); # don't need, already done in cache_as_ram + +#if CONFIG_LOGICAL_CPUS==1 + set_apicid_cpuid_lo(); + id = get_node_core_id_x(); // that is initid + #if ENABLE_APIC_EXT_ID == 1 + if(id.coreid == 0) { + enable_apic_ext_id(id.nodeid); + } + #endif +#else + nodeid = get_node_id(); + #if ENABLE_APIC_EXT_ID == 1 + enable_apic_ext_id(nodeid); + #endif +#endif + + enable_lapic(); + + init_timer(); + + +#if CONFIG_LOGICAL_CPUS==1 + #if ENABLE_APIC_EXT_ID == 1 + #if LIFT_BSP_APIC_ID == 0 + if( id.nodeid != 0 ) //all except cores in node0 + #endif + lapic_write(LAPIC_ID, ( lapic_read(LAPIC_ID) | (APIC_ID_OFFSET<<24) ) ); + #endif + if(id.coreid == 0) { + if (cpu_init_detected(id.nodeid)) { + cpu_reset = 1; + goto cpu_reset_x; + } + distinguish_cpu_resets(id.nodeid); + } +#else + #if ENABLE_APIC_EXT_ID == 1 + #if LIFT_BSP_APIC_ID == 0 + if(nodeid != 0) + #endif + lapic_write(LAPIC_ID, ( lapic_read(LAPIC_ID) | (APIC_ID_OFFSET<<24) ) ); // CPU apicid is from 0x10 + + #endif + if (cpu_init_detected(nodeid)) { + cpu_reset = 1; + goto cpu_reset_x; + } + distinguish_cpu_resets(nodeid); +#endif + + + if (!boot_cpu() +#if CONFIG_LOGICAL_CPUS==1 + || (id.coreid != 0) +#endif + ) { + // We need stop the CACHE as RAM for this CPU too + #include "cpu/amd/car/cache_as_ram_post.c" + stop_this_cpu(); // it will stop all cores except core0 of cpu0 + } + } + + + lpc47b397_enable_serial(SERIAL_DEV, TTYS0_BASE); + uart_init(); + console_init(); + + /* Halt if there was a built in self test failure */ + report_bist_failure(bist); + + setup_s2895_resource_map(); +#if 0 + dump_pci_device(PCI_DEV(0, 0x18, 0)); + dump_pci_device(PCI_DEV(0, 0x19, 0)); +#endif + + needs_reset = setup_coherent_ht_domain(); + +#if CONFIG_LOGICAL_CPUS==1 + // It is said that we should start core1 after all core0 launched + start_other_cores(); +#endif + +#if CK804B_BUSN == 0x80 + // You need to preset bus num in PCI_DEV(0, 0x18,1) 0xe0, 0xe4, 0xe8, 0xec + needs_reset |= ht_setup_chains(3); +#else + // automatically set that for you, but you might meet tight space + // Bcause it has two Ck804, we need to set CK804B_BUSN to 0xc (ht_setup_chains_x will let second CK804 use that bus num. + // otherwise ck804_eary_setup can not work rightly. + needs_reset |= ht_setup_chains_x(); +#endif + + needs_reset |= ck804_early_setup_x(); + + if (needs_reset) { + print_info("ht reset -\r\n"); + soft_reset(); + } + + enable_smbus(); +#if 0 + dump_spd_registers(&cpu[0]); +#endif +#if 0 + dump_smbus_registers(); +#endif + + memreset_setup(); + sdram_initialize(sizeof(cpu)/sizeof(cpu[0]), cpu); + +#if 0 + dump_pci_devices(); +#endif + +#if 1 + { + /* Check value of esp to verify if we have enough rom for stack in Cache as RAM */ + unsigned v_esp; + __asm__ volatile ( + "movl %%esp, %0\n\t" + : "=a" (v_esp) + ); +#if CONFIG_USE_INIT + printk_debug("v_esp=%08x\r\n", v_esp); +#else + print_debug("v_esp="); print_debug_hex32(v_esp); print_debug("\r\n"); +#endif + } + +#endif + +cpu_reset_x: + +#if CONFIG_USE_INIT + printk_debug("cpu_reset = %08x\r\n",cpu_reset); +#else + print_debug("cpu_reset = "); print_debug_hex32(cpu_reset); print_debug("\r\n"); +#endif + + if(cpu_reset == 0) { + print_debug("Clearing initial memory region: "); + } + print_debug("No cache as ram now - "); + + /* store cpu_reset to ebx */ + __asm__ volatile ( + "movl %0, %%ebx\n\t" + ::"a" (cpu_reset) + ); + + if(cpu_reset==0) { +#define CLEAR_FIRST_1M_RAM 1 +#include "cpu/amd/car/cache_as_ram_post.c" + } + else { +#undef CLEAR_FIRST_1M_RAM +#include "cpu/amd/car/cache_as_ram_post.c" + } + + __asm__ volatile ( + /* set new esp */ /* before _RAMBASE */ + "movl %0, %%ebp\n\t" + "movl %0, %%esp\n\t" + ::"a"( _RAMBASE - 4 ) + ); + + { + unsigned new_cpu_reset; + + /* get back cpu_reset from ebx */ + __asm__ volatile ( + "movl %%ebx, %0\n\t" + :"=a" (new_cpu_reset) + ); + + /* We can not go back any more, we lost old stack data in cache as ram*/ + if(new_cpu_reset==0) { + print_debug("Use Ram as Stack now - done\r\n"); + } else + { + print_debug("Use Ram as Stack now - \r\n"); + } +#if CONFIG_USE_INIT + printk_debug("new_cpu_reset = %08x\r\n", new_cpu_reset); +#else + print_debug("new_cpu_reset = "); print_debug_hex32(new_cpu_reset); print_debug("\r\n"); +#endif + + /*copy and execute linuxbios_ram */ + copy_and_run(new_cpu_reset); + /* We will not return */ + } + + + print_err("should not be here -\r\n"); +} -- cgit v1.2.3