diff options
author | David Hendricks <dhendricks@fb.com> | 2017-12-01 20:49:48 -0800 |
---|---|---|
committer | Patrick Rudolph <siro@das-labor.org> | 2018-07-10 07:01:57 +0000 |
commit | 8cbd569f74d8929387730e45b0d6e993b1365c02 (patch) | |
tree | ca6414a4d81e37280887b0da0f1a6120a50f0a3a /src/soc/cavium/cn81xx/sdram.c | |
parent | 03d31427338ba59d3a354ac1beb3b0c153471768 (diff) |
cavium: Add CN81xx SoC and eval board support
This adds Cavium CN81xx SoC and SFF EVB files.
Code is based off of Cavium's Octeon-TX SDK:
https://github.com/Cavium-Open-Source-Distributions/OCTEON-TX-SDK
BDK coreboot differences:
bootblock:
- Get rid of BDK header
- Add Kconfig for link address
- Move CAR setup code into assembly
- Move unaligned memory access enable into assembly
- Implement custom bootblock entry function
- Add CLIB and CSIB blobs
romstage:
- Use minimal DRAM init only
devicetree:
- Convert FTD to static C file containing key value pairs
Tested on CN81xx:
- Boots to payload
- Tested with GNU/Linux 4.16.3
- All hardware is usable (after applying additional commits)
Implemented in future commits:
- Vboot integration
- MMU suuport
- L2 Cache handling
- ATF from external repo
- Devicetree patching
- Extended DRAM testing
- UART init
Not working:
- Booting a payload
- Booting upstream ATF
TODO:
- Configuration straps
Change-Id: I47b4412d29203b45aee49bfa026c1d86ef7ce688
Signed-off-by: David Hendricks <dhendricks@fb.com>
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/23037
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: David Hendricks <david.hendricks@gmail.com>
Diffstat (limited to 'src/soc/cavium/cn81xx/sdram.c')
-rw-r--r-- | src/soc/cavium/cn81xx/sdram.c | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/src/soc/cavium/cn81xx/sdram.c b/src/soc/cavium/cn81xx/sdram.c new file mode 100644 index 0000000000..77717ea78d --- /dev/null +++ b/src/soc/cavium/cn81xx/sdram.c @@ -0,0 +1,94 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2018 Facebook, Inc. + * Copyright 2003-2017 Cavium Inc. <support@cavium.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * Derived from Cavium's BSD-3 Clause OCTEONTX-SDK-6.2.0. + */ + +#include <console/console.h> +#include <soc/sdram.h> + +#include <libbdk-arch/bdk-warn.h> +#include <libbdk-arch/bdk-csrs-rst.h> +#include <libbdk-boot/bdk-watchdog.h> +#include <libbdk-dram/bdk-dram-config.h> +#include <libbdk-dram/bdk-dram-test.h> +#include <libbdk-hal/bdk-config.h> +#include <libbdk-hal/bdk-utils.h> +#include <libbdk-hal/bdk-l2c.h> +#include <libdram/libdram-config.h> + +size_t sdram_size_mb(void) +{ + return bdk_dram_get_size_mbytes(0); +} + +/* based on bdk_boot_dram() */ +void sdram_init(void) +{ + printk(BIOS_DEBUG, "Initializing DRAM\n"); + + /** + * FIXME: second arg is actually a desired frequency if set (the + * function usually obtains frequency via the config). That might + * be useful if FDT or u-boot env is too cumbersome. + */ + int mbytes = bdk_dram_config(0, 0); + if (mbytes < 0) { + bdk_error("N0: Failed DRAM init\n"); + die("DRAM INIT FAILED !\n"); + } + + /* Poke the watchdog */ + bdk_watchdog_poke(); + + /* Report DRAM status */ + printf("N0: DRAM:%s\n", bdk_dram_get_info_string(0)); + + /* See if we should test this node's DRAM during boot */ + int test_dram = bdk_config_get_int(BDK_CONFIG_DRAM_BOOT_TEST, 0); + if (test_dram) { + /* Run the address test to make sure DRAM works */ + if (bdk_dram_test(13, 0, 0x10000000000ull, BDK_DRAM_TEST_NO_STATS | (1<<0))) { + /** + * FIXME(dhendrix): This should be handled by mainboard code since we + * don't necessarily have a BMC to report to. Also, we need to figure out + * if we need to keep going as to avoid getting into a boot loop. + */ + // bdk_boot_status(BDK_BOOT_STATUS_REQUEST_POWER_CYCLE); + printk(BIOS_ERR, "%s: Failed DRAM test.\n", __func__); + } + bdk_watchdog_poke(); + /* Put other node core back in reset */ + if (0 != bdk_numa_master()) + BDK_CSR_WRITE(0, BDK_RST_PP_RESET, -1); + /* Clear DRAM */ + uint64_t skip = 0; + if (0 == bdk_numa_master()) + skip = bdk_dram_get_top_of_bdk(); + void *base = bdk_phys_to_ptr(bdk_numa_get_address(0, skip)); + bdk_zero_memory(base, ((uint64_t)mbytes << 20) - skip); + bdk_watchdog_poke(); + } + + /* Unlock L2 now that DRAM works */ + if (0 == bdk_numa_master()) { + uint64_t l2_size = bdk_l2c_get_cache_size_bytes(0); + BDK_TRACE(INIT, "Unlocking L2\n"); + bdk_l2c_unlock_mem_region(0, 0, l2_size); + bdk_watchdog_poke(); + } + + printk(BIOS_INFO, "SDRAM initialization finished.\n"); +} |