[coreboot] ram init help on the i82830

[Corey Osgood]

I'm not sure about the problem, try a ram_check just to confirm it's
bum ram, and see if you can pinpoint where it's bad.

>        /* See if there are 2 sticks. */
>        if((drb1 != 0) && (drb3 != 0)) {

Should be:

if((drb1 != 0) && (drb3 != drb1))

-Corey

On Thu, May 29, 2008 at 1:29 AM, Joseph Smith <joe at settoplinux.org> wrote:
>
> Well I changed it around a bit, here is what I came up with:
>
> static void do_ram_command(const struct mem_controller *ctrl, uint32_t
> command,
>                           uint32_t addr_offset)
> {
>        int i;
>        uint8_t drb1, drb3;
>        uint32_t reg32;
>
>        /* Configure the RAM command. */
>        reg32 = pci_read_config32(ctrl->d0, DRC);
>        /* Clear bits 29, 10-8, 6-4. */
>        reg32 &= 0xdffff88f;
>        reg32 |= command << 4;
>
>        drb1 = pci_read_config8(ctrl->d0, DRB + 1);
>        drb3 = pci_read_config8(ctrl->d0, DRB + 3);
>
>        /* See if there are 2 sticks. */
>        if((drb1 != 0) && (drb3 != 0)) {
>                /* If RAM_COMMAND_NORMAL set the refresh mode. */
>                if (command == RAM_COMMAND_NORMAL)
>                        reg32 |= (RAM_COMMAND_REFRESH << 8);
>                pci_write_config32(ctrl->d0, DRC, reg32);
>
>                /* Send ram commands to DIMM0. */
>                read32(0 + addr_offset);
>                PRINT_DEBUG("    Sending RAM command DIMM0 0x");
>                PRINT_DEBUG_HEX32(reg32);
>                PRINT_DEBUG(" to 0x");
>                PRINT_DEBUG_HEX32(0 + addr_offset);
>                PRINT_DEBUG("\r\n");
>
>                /* If RAM_COMMAND_NORMAL set the IC bit. */
>                if (command == RAM_COMMAND_NORMAL)
>                        reg32 |= (RAM_COMMAND_IC << 29);
>                pci_write_config32(ctrl->d0, DRC, reg32);
>                /* Send ram commands to DIMM1. */
>                read32((drb1 * 32 * 1024 * 1024) + addr_offset);
>                PRINT_DEBUG("    Sending RAM command DIMM1 0x");
>                PRINT_DEBUG_HEX32(reg32);
>                PRINT_DEBUG(" to 0x");
>                PRINT_DEBUG_HEX32((drb1 * 32 * 1024 * 1024) + addr_offset);
>                PRINT_DEBUG("\r\n");
>        } else {
>                /* If RAM_COMMAND_NORMAL set the refresh mode and IC bit. */
>                if (command == RAM_COMMAND_NORMAL)
>                        reg32 |= ((RAM_COMMAND_REFRESH << 8) | (RAM_COMMAND_IC << 29));
>                pci_write_config32(ctrl->d0, DRC, reg32);
>
>                read32(0 + addr_offset);
>                PRINT_DEBUG("    Sending RAM command to DIMM at 0x");
>                PRINT_DEBUG_HEX32(reg32);
>                PRINT_DEBUG(" to 0x");
>                PRINT_DEBUG_HEX32(0 + addr_offset);
>                PRINT_DEBUG("\r\n");
>       }
>
> }
>
> The process seems to do what it is supposed to but it is still craping out.
> HELP??
> Here is the bootlog:
>
> coreboot-2.0.0_IP1000 Thu May 29 00:58:25 EDT 2008 starting...
> Setting initial registers....
> Initial registers have been set.
> Found DIMM in slot 00
> DIMM is 0x0100 on side 1
> DIMM is 0x0100 on side 2
> DRB 0x60 has been set to 0x08
> DRB1 0x61 has been set to 0x10
> Found DIMM in slot 01
> DIMM is 0x0040 on side 1
> DIMM is 0x0000 on side 2
> DRB2 0x62 has been set to 0x12
> DRB3 0x63 has been set to 0x12
> Found DIMM in slot 00, setting DRA...
> DRA 0x70 has been set to 0x08
> Found DIMM in slot 01, setting DRA...
> DRA 0x71 has been set to 0xf1
> RAM Enable 1: Apply NOP
>    Sending RAM command DIMM0 0x00000010 to 0x00000000
>    Sending RAM command DIMM1 0x00000010 to 0x20000000
> RAM Enable 2: Precharge all
>    Sending RAM command DIMM0 0x00000020 to 0x00000000
>    Sending RAM command DIMM1 0x00000020 to 0x20000000
> RAM Enable 3: CBR
>    Sending RAM command DIMM0 0x00000060 to 0x00000000
>    Sending RAM command DIMM1 0x00000060 to 0x20000000
>    Sending RAM command DIMM0 0x00000060 to 0x00000000
>    Sending RAM command DIMM1 0x00000060 to 0x20000000
>    Sending RAM command DIMM0 0x00000060 to 0x00000000
>    Sending RAM command DIMM1 0x00000060 to 0x20000000
>    Sending RAM command DIMM0 0x00000060 to 0x00000000
>    Sending RAM command DIMM1 0x00000060 to 0x20000000
>    Sending RAM command DIMM0 0x00000060 to 0x00000000
>    Sending RAM command DIMM1 0x00000060 to 0x20000000
>    Sending RAM command DIMM0 0x00000060 to 0x00000000
>    Sending RAM command DIMM1 0x00000060 to 0x20000000
>    Sending RAM command DIMM0 0x00000060 to 0x00000000
>    Sending RAM command DIMM1 0x00000060 to 0x20000000
>    Sending RAM command DIMM0 0x00000060 to 0x00000000
>    Sending RAM command DIMM1 0x00000060 to 0x20000000
> RAM Enable 4: Mode register set
>    Sending RAM command DIMM0 0x00000030 to 0x000001d0
>    Sending RAM command DIMM1 0x00000030 to 0x200001d0
> RAM Enable 5: Normal operation
>    Sending RAM command DIMM0 0x00000270 to 0x00000000
>    Sending RAM command DIMM1 0x20000270 to 0x20000000
> Northbridge following SDRAM init:
> PCI: 00:00.00
> 00: 86 80 75 35 06 00 10 00 04 00 00 06 00 00 00 00
> 10: 08 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 20: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 30: 00 00 00 00 40 00 00 00 00 00 00 00 00 00 00 00
> 40: 09 00 05 01 00 00 00 00 00 00 00 00 02 28 00 0e
> 50: 72 a0 40 00 00 00 00 00 00 30 33 33 33 33 33 33
> 60: 08 10 12 12 12 12 00 00 00 00 00 00 00 00 00 00
> 70: 08 f1 ff ff 00 00 00 00 10 00 00 00 70 02 00 20
> 80: 00 00 00 00 00 00 00 00 80 60 33 0b 00 00 00 00
> 90: 02 38 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> a0: 02 00 20 00 17 02 00 1f 00 00 00 00 00 00 00 00
> b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> c0: 00 54 0e 41 a2 99 01 00 c0 00 00 00 00 00 00 00
> d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> e0: 00 00 00 00 00 00 00 00 00 00 00 00 1b 49 9b fc
> f0: 11 11 01 00 00 00 0b 05 35 d0 2c cf 1f cd 1d cc
> Copying coreboot to RAM.
> Jumping to coreboot.
>
> ####LOCKS UP HERE####
>
> What am I doing wrong?
> --
> Thanks,
> Joseph Smith
> Set-Top-Linux
> www.settoplinux.org
>
>