8085f032f8
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1742 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
141 lines
3.2 KiB
C
141 lines
3.2 KiB
C
#include <console/console.h>
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#include <device/device.h>
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#include <device/pci.h>
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#include <device/pci_ids.h>
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#include <device/pci_ops.h>
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#include "chip.h"
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#undef DEBUG
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#define DEBUG 0
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#if DEBUG
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static void print_pci_regs(struct device *dev)
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{
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uint8_t byte;
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int i;
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for(i=0;i<256;i++) {
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byte = pci_read_config8(dev, i);
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if((i & 0xf)==0) printk_debug("\n%02x:",i);
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printk_debug(" %02x",byte);
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}
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printk_debug("\n");
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}
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static void print_mem(void)
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{
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unsigned int i;
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unsigned int start = 0xfffff000;
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for(i=start;i<0xffffffff;i++) {
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if((i & 0xf)==0) printk_debug("\n %08x:",i);
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printk_debug(" %02x ",(unsigned char)*((unsigned char *)i));
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}
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printk_debug(" %02x \n",(unsigned char)*((unsigned char *)i));
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}
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static void print_pci_regs_all(void)
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{
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struct device *dev;
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unsigned char i,j,k;
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for(i=0;i<=15;i++) {
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for(j=0;j<=0x1f;j++) {
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for (k=0;k<=6;k++){
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dev = dev_find_slot(i, PCI_DEVFN(j, k));
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if(!dev) {
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continue;
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}
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if(!dev->enabled) {
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continue;
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}
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printk_debug("\n%02x:%02x:%02x aka %s",i,j,k, dev_path(dev));
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print_pci_regs(dev);
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}
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}
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}
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}
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static void debug_init(device_t dev)
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{
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unsigned bus;
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unsigned devfn;
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// print_pci_regs_all();
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print_mem();
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#if 0
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msr_t msr;
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unsigned index;
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unsigned eax, ebx, ecx, edx;
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index = 0x80000007;
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printk_debug("calling cpuid 0x%08x\n", index);
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asm volatile(
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"cpuid"
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: "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx)
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: "a" (index)
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);
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printk_debug("cpuid[%08x]: %08x %08x %08x %08x\n",
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index, eax, ebx, ecx, edx);
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if (edx & (3 << 1)) {
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index = 0xC0010042;
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printk_debug("Reading msr: 0x%08x\n", index);
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msr = rdmsr(index);
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printk_debug("msr[0x%08x]: 0x%08x%08x\n",
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index, msr.hi, msr.hi);
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}
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#endif
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}
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static void debug_noop(device_t dummy)
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{
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}
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static struct device_operations debug_operations = {
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.read_resources = debug_noop,
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.set_resources = debug_noop,
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.enable_resources = debug_noop,
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.init = debug_init,
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};
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static unsigned int scan_root_bus(device_t root, unsigned int max)
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{
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struct device_path path;
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device_t debug;
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max = root_dev_scan_bus(root, max);
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path.type = DEVICE_PATH_PNP;
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path.u.pnp.port = 0;
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path.u.pnp.device = 0;
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debug = alloc_dev(&root->link[1], &path);
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debug->ops = &debug_operations;
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return max;
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}
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static void mainboard_init(device_t dev)
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{
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root_dev_init(dev);
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// Do sth
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}
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static struct device_operations mainboard_operations = {
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.read_resources = root_dev_read_resources,
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.set_resources = root_dev_set_resources,
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.enable_resources = root_dev_enable_resources,
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.init = mainboard_init,
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.scan_bus = scan_root_bus,
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};
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static void enable_dev(struct device *dev)
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{
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dev_root.ops = &mainboard_operations;
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}
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#endif
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struct chip_operations mainboard_tyan_s2880_ops = {
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CHIP_NAME("Tyan s2880 mainboard")
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#if DEBUG
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.enable_dev = enable_dev,
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#endif
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};
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