Revision: linuxbios@linuxbios.org--devel/freebios--devel--2.0--patch-51

Creator:  Yinghai Lu <yhlu@tyan.com>

cache_as_ram for AMD and some intel


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1967 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

3 files changed, 499 insertions, 7 deletions

diff --git a/src/mainboard/tyan/s2892/Config.lb b/src/mainboard/tyan/s2892/Config.lb
index 215c4a80db..504f12d270 100644
--- a/src/mainboard/tyan/s2892/Config.lb
+++ b/src/mainboard/tyan/s2892/Config.lb
@@ -47,6 +47,28 @@ 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
+
+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 $@"
+end
+
+end
+else
+
 ##
 ## Romcc output
 ##
@@ -69,13 +91,25 @@ makerule ./auto.inc
         action  "./romcc    -mcpu=k8 -O2 -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/auto.c -o $@"
 end
 
+
+end
+
 ##
 ## Build our 16 bit and 32 bit linuxBIOS entry code
 ##
 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)
@@ -88,8 +122,11 @@ else
 	ldscript /cpu/x86/32bit/reset32.lds 
 end
 
+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)
@@ -105,15 +142,26 @@ 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 
+if USE_DCACHE_RAM
+       ldscript /arch/i386/lib/failover.lds 
+else
+       ldscript /arch/i386/lib/failover.lds 
 	mainboardinit ./failover.inc
 end
+end
 
 ###
 ### O.k. We aren't just an intermediary anymore!
@@ -122,6 +170,16 @@ end
 ##
 ## Setup RAM
 ##
+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
@@ -129,6 +187,8 @@ 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/s2892/Options.lb b/src/mainboard/tyan/s2892/Options.lb
index 6423773a27..20b58bce85 100644
--- a/src/mainboard/tyan/s2892/Options.lb
+++ b/src/mainboard/tyan/s2892/Options.lb
@@ -60,10 +60,19 @@ 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
 
+#1M bytes
+#default ROM_SIZE=1048576
+
+
 ##
 ## FALLBACK_SIZE is the amount of the ROM the complete fallback image will use
 ##
@@ -83,9 +92,9 @@ 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
@@ -134,6 +143,14 @@ 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 +160,8 @@ default CONFIG_IOAPIC=1
 ##
 ## Clean up the motherboard id strings
 ##
-default MAINBOARD_PART_NUMBER="Tyan"
-default MAINBOARD_VENDOR="s2892"
+default MAINBOARD_PART_NUMBER="s2892"
+default MAINBOARD_VENDOR="Tyan"
 default MAINBOARD_PCI_SUBSYSTEM_VENDOR_ID=0x10f1
 default MAINBOARD_PCI_SUBSYSTEM_DEVICE_ID=0x2892
 
diff --git a/src/mainboard/tyan/s2892/cache_as_ram_auto.c b/src/mainboard/tyan/s2892/cache_as_ram_auto.c
new file mode 100644
index 0000000000..14b15d4775
--- /dev/null
+++ b/src/mainboard/tyan/s2892/cache_as_ram_auto.c
@@ -0,0 +1,415 @@
+#define ASSEMBLY 1
+#define __ROMCC__
+ 
+#include <stdint.h>
+#include <device/pci_def.h>
+#include <arch/io.h>
+#include <device/pnp_def.h>
+#include <arch/romcc_io.h>
+#include <cpu/x86/lapic.h>
+#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/winbond/w83627hf/w83627hf_early_serial.c"
+
+#include "cpu/amd/mtrr/amd_earlymtrr.c"
+#include "cpu/x86/bist.h"
+
+#include "northbridge/amd/amdk8/setup_resource_map.c"
+
+#define SERIAL_DEV PNP_DEV(0x2e, W83627HF_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)
+{
+}
+
+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"
+#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 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+15, ~(0xff), ((0<<4)|(0<<2)|(0<<0)),/* M8,GPIO16, PCIXA_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+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;
+
+        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<<0);
+        pci_write_config32(PCI_DEV(0, CK804_DEVN_BASE+1 , 0), 0xa0, dword);
+
+
+}
+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
+#else
+                nodeid = get_node_id();
+#endif
+
+                enable_lapic();
+//                init_timer();
+
+#if CONFIG_LOGICAL_CPUS==1
+                if(id.coreid == 0) {
+                        if (cpu_init_detected(id.nodeid)) {
+                                cpu_reset = 1;
+                                goto cpu_reset_x;
+                        }
+                        distinguish_cpu_resets(id.nodeid);
+                }
+#else
+                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
+                }
+
+        }
+
+	init_timer(); // only do it it first CPU
+
+	
+ 	w83627hf_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_s2892_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
+        needs_reset |= ht_setup_chains_x();
+
+        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_debug("should not be here -\r\n");
+
+}