David Hendricks (dhendrix@chromium.org) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/2302
-gerrit
commit 40bcc8f0e13d8ce26edb90095c663026f77d12d7 Author: David Hendricks dhendrix@chromium.org Date: Wed Feb 6 16:29:42 2013 -0800
snow: cleanup ramstage and call hardwaremain()
** do not submit (work-in-progress) **
It *no longer* dies in write_coreboot_tables(). The trick is that lb_table_fini is more than informational, it writes a record and hence can not be called before any other record has been written, or it writes garbage. Oops. That's a problem with the original too: it assumes at least one record written, which is safe, because there's always one record written. Hence one can not call lb_table_fini just to ask a question. It can only be called once.
Note 1: For ARM we can get away with only using one table, the high table and low table distinction is an x86-ism.
Note 2: We'll eventually need to fill in the device structure so that search_global_resources() can mark regions appropriately. Fortunately we can get by with the assumption that 0x4000_0000- 0xffff_ffff is plain memory without any IO holes (We'll probably want to specify which regions are IO later on).
Change-Id: I30200432535244de971a7cea9f7902f5e9b46403 Signed-off-by: David Hendricks dhendrix@chromium.org --- src/arch/armv7/boot/coreboot_table.c | 81 +++++++++++++-------------- src/arch/armv7/boot/tables.c | 59 ++++++++----------- src/arch/armv7/include/arch/coreboot_tables.h | 3 +- src/lib/compute_ip_checksum.c | 2 + src/lib/hardwaremain.c | 4 +- src/mainboard/google/snow/ramstage.c | 17 ++++-- 6 files changed, 81 insertions(+), 85 deletions(-)
diff --git a/src/arch/armv7/boot/coreboot_table.c b/src/arch/armv7/boot/coreboot_table.c index b2d88aa..ed105a4 100644 --- a/src/arch/armv7/boot/coreboot_table.c +++ b/src/arch/armv7/boot/coreboot_table.c @@ -559,11 +559,13 @@ struct lb_memory *get_lb_mem(void) return mem_ranges; }
+#if 0 static void build_lb_mem_range(void *gp, struct device *dev, struct resource *res) { struct lb_memory *mem = gp; new_lb_memory_range(mem, LB_MEM_RAM, res->base, res->size); } +#endif
static struct lb_memory *build_lb_mem(struct lb_header *head) { @@ -573,11 +575,15 @@ static struct lb_memory *build_lb_mem(struct lb_header *head) mem = lb_memory(head); mem_ranges = mem;
+ /* FIXME: implement this */ +#if 0 /* Build the raw table of memory */ search_global_resources( IORESOURCE_MEM | IORESOURCE_CACHEABLE, IORESOURCE_MEM | IORESOURCE_CACHEABLE, build_lb_mem_range, mem); - lb_cleanup_memory_ranges(mem); +#endif + /* FIXME: things die in cleanup_memory_ranges(), skip for now */ +// lb_cleanup_memory_ranges(mem); return mem; }
@@ -596,47 +602,27 @@ static void add_lb_reserved(struct lb_memory *mem) }
unsigned long write_coreboot_table( - unsigned long low_table_start, unsigned long low_table_end, - unsigned long rom_table_start, unsigned long rom_table_end) + unsigned long table_start, unsigned long table_end) { struct lb_header *head; struct lb_memory *mem; + unsigned long fini;
-#if CONFIG_WRITE_HIGH_TABLES - printk(BIOS_DEBUG, "Writing high table forward entry at 0x%08lx\n", - low_table_end); - head = lb_table_init(low_table_end); - lb_forward(head, (struct lb_header*)rom_table_end); - - low_table_end = (unsigned long) lb_table_fini(head, 0); - printk(BIOS_DEBUG, "New low_table_end: 0x%08lx\n", low_table_end); - printk(BIOS_DEBUG, "Now going to write high coreboot table at 0x%08lx\n", - rom_table_end); - - head = lb_table_init(rom_table_end); - rom_table_end = (unsigned long)head; - printk(BIOS_DEBUG, "rom_table_end = 0x%08lx\n", rom_table_end); -#else - if(low_table_end > (0x1000 - sizeof(struct lb_header))) { /* after 4K */ - /* We need to put lbtable on to [0xf0000,0x100000) */ - head = lb_table_init(rom_table_end); - rom_table_end = (unsigned long)head; - } else { - head = lb_table_init(low_table_end); - low_table_end = (unsigned long)head; - } -#endif + printk(BIOS_DEBUG, "table_start: 0x%lx, table_end: 0x%lx\n", + table_start, table_end); + head = lb_table_init(table_start); + + printk(BIOS_DEBUG, "Writing table forward entry at 0x%08lx\n", + table_end); + lb_forward(head, (struct lb_header*)table_end);
- printk(BIOS_DEBUG, "Adjust low_table_end from 0x%08lx to ", low_table_end); - low_table_end += 0xfff; // 4K aligned - low_table_end &= ~0xfff; - printk(BIOS_DEBUG, "0x%08lx \n", low_table_end); + table_end = (unsigned long) head + head->table_bytes;
- /* The Linux kernel assumes this region is reserved */ - printk(BIOS_DEBUG, "Adjust rom_table_end from 0x%08lx to ", rom_table_end); - rom_table_end += 0xffff; // 64K align - rom_table_end &= ~0xffff; - printk(BIOS_DEBUG, "0x%08lx \n", rom_table_end); + /* FIXME(dhendrix): do we need this? */ + printk(BIOS_DEBUG, "Adjust table_end from 0x%08lx to ", table_end); + table_end += 0xfff; // 4K aligned + table_end &= ~0xfff; + printk(BIOS_DEBUG, "0x%08lx \n", table_end);
#if CONFIG_USE_OPTION_TABLE { @@ -655,21 +641,29 @@ unsigned long write_coreboot_table( } #endif /* Record where RAM is located */ + /* FIXME(dhendrix): add global resources */ + printk(BIOS_DEBUG, "%s: head: 0x%p\n", __func__, head); mem = build_lb_mem(head); + /* FIXME: we seem to get a bogus return value */ + printk(BIOS_DEBUG, "%s: mem: 0x%p\n", __func__, mem); + if ((unsigned long)mem < CONFIG_RAMBASE) { + printk(BIOS_DEBUG, "%s: mem < CONFIG_RAMBASE\n" , __func__); + while (1); + }
/* Record the mptable and the the lb_table (This will be adjusted later) */ lb_add_memory_range(mem, LB_MEM_TABLE, - low_table_start, low_table_end - low_table_start); + table_start, table_end - table_start);
/* Record the pirq table, acpi tables, and maybe the mptable */ lb_add_memory_range(mem, LB_MEM_TABLE, - rom_table_start, rom_table_end-rom_table_start); + table_start, table_end - table_start);
#if CONFIG_WRITE_HIGH_TABLES printk(BIOS_DEBUG, "Adding high table area\n"); // should this be LB_MEM_ACPI? lb_add_memory_range(mem, LB_MEM_TABLE, - high_tables_base, high_tables_size); + table_start, table_end - table_start); #endif
/* Add reserved regions */ @@ -679,11 +673,12 @@ unsigned long write_coreboot_table(
/* Note: * I assume that there is always memory at immediately after - * the low_table_end. This means that after I setup the coreboot table. + * the table_end. This means that after I setup the coreboot table. * I can trivially fixup the reserved memory ranges to hold the correct * size of the coreboot table. */
+ /* FIXME(dhendrix): Most of these do nothing at the moment */ /* Record our motherboard */ lb_mainboard(head); /* Record the serial port, if present */ @@ -695,6 +690,7 @@ unsigned long write_coreboot_table( /* Record our framebuffer */ lb_framebuffer(head);
+#if 0 #if CONFIG_CHROMEOS /* Record our GPIO settings (ChromeOS specific) */ lb_gpios(head); @@ -705,9 +701,12 @@ unsigned long write_coreboot_table( /* pass along VBNV offsets in CMOS */ lb_vbnv(head); #endif +#endif add_cbmem_pointers(head);
/* Remember where my valid memory ranges are */ - return lb_table_fini(head, 1); + fini = lb_table_fini(head, 1); + printk(BIOS_DEBUG, "%s: DONE: fini is 0x%lx\n", __func__, fini); + return fini;
} diff --git a/src/arch/armv7/boot/tables.c b/src/arch/armv7/boot/tables.c index 07c5635..a60ebca 100644 --- a/src/arch/armv7/boot/tables.c +++ b/src/arch/armv7/boot/tables.c @@ -28,6 +28,10 @@ #include <cbmem.h> #include <lib.h>
+/* + * TODO: "High" tables are a convention used on x86. Maybe we can + * clean up that naming at some point. + */ uint64_t high_tables_base = 0; uint64_t high_tables_size;
@@ -37,59 +41,40 @@ void cbmem_arch_init(void)
struct lb_memory *write_tables(void) { - unsigned long low_table_start, low_table_end; - unsigned long rom_table_start, rom_table_end; - - /* Even if high tables are configured, some tables are copied both to - * the low and the high area, so payloads and OSes don't need to know - * about the high tables. - */ - unsigned long high_table_pointer; + unsigned long table_pointer;
if (!high_tables_base) { - printk(BIOS_ERR, "ERROR: High Tables Base is not set.\n"); + printk(BIOS_ERR, "ERROR: coreboot_tables_base is not set.\n"); // Are there any boards without? // Stepan thinks we should die() here! }
- printk(BIOS_DEBUG, "High Tables Base is %llx.\n", high_tables_base); - - rom_table_start = 0xf0000; - rom_table_end = 0xf0000; - - /* Start low addr at 0x500, so we don't run into conflicts with the BDA - * in case our data structures grow beyound 0x400. Only multiboot, GDT - * and the coreboot table use low_tables. - */ - low_table_start = 0; - low_table_end = 0x500; + printk(BIOS_DEBUG, "high_tables_base: %llx.\n", high_tables_base);
#define MAX_COREBOOT_TABLE_SIZE (8 * 1024) post_code(0x9d);
- high_table_pointer = (unsigned long)cbmem_add(CBMEM_ID_CBTABLE, MAX_COREBOOT_TABLE_SIZE); - - if (high_table_pointer) { - unsigned long new_high_table_pointer; - - /* Also put a forwarder entry into 0-4K */ - new_high_table_pointer = write_coreboot_table(low_table_start, low_table_end, - high_tables_base, high_table_pointer); - - if (new_high_table_pointer > (high_table_pointer + - MAX_COREBOOT_TABLE_SIZE)) + table_pointer = (unsigned long)cbmem_add(CBMEM_ID_CBTABLE, + MAX_COREBOOT_TABLE_SIZE); + if (table_pointer) { + unsigned long new_table_pointer; + new_table_pointer = write_coreboot_table(table_pointer, + high_tables_size); + if (table_pointer > (table_pointer + MAX_COREBOOT_TABLE_SIZE)) { printk(BIOS_ERR, "%s: coreboot table didn't fit (%lx)\n", - __func__, new_high_table_pointer - - high_table_pointer); - - printk(BIOS_DEBUG, "coreboot table: %ld bytes.\n", - new_high_table_pointer - high_table_pointer); - } else { + __func__, new_table_pointer - table_pointer); + } + printk(BIOS_DEBUG, "coreboot table: %ld bytes.\n", + new_table_pointer - table_pointer); + } +#if 0 + else { /* The coreboot table must be in 0-4K or 960K-1M */ rom_table_end = write_coreboot_table( low_table_start, low_table_end, rom_table_start, rom_table_end); } +#endif
post_code(0x9e);
diff --git a/src/arch/armv7/include/arch/coreboot_tables.h b/src/arch/armv7/include/arch/coreboot_tables.h index 3c9bf98..e8bb7be 100644 --- a/src/arch/armv7/include/arch/coreboot_tables.h +++ b/src/arch/armv7/include/arch/coreboot_tables.h @@ -5,8 +5,7 @@
/* This file holds function prototypes for building the coreboot table. */ unsigned long write_coreboot_table( - unsigned long low_table_start, unsigned long low_table_end, - unsigned long rom_table_start, unsigned long rom_table_end); + unsigned long table_start, unsigned long table_end);
void lb_memory_range(struct lb_memory *mem, uint32_t type, uint64_t start, uint64_t size); diff --git a/src/lib/compute_ip_checksum.c b/src/lib/compute_ip_checksum.c index 48f93d4..8526f6d 100644 --- a/src/lib/compute_ip_checksum.c +++ b/src/lib/compute_ip_checksum.c @@ -1,6 +1,8 @@ #include <stdint.h> #include <ip_checksum.h>
+#include <console/console.h> + unsigned long compute_ip_checksum(void *addr, unsigned long length) { uint8_t *ptr; diff --git a/src/lib/hardwaremain.c b/src/lib/hardwaremain.c index 85c05f5..c0822d6 100644 --- a/src/lib/hardwaremain.c +++ b/src/lib/hardwaremain.c @@ -114,7 +114,7 @@ void hardwaremain(int boot_complete) timestamp_stash(TS_DEVICE_DONE);
#if CONFIG_WRITE_HIGH_TABLES - cbmem_initialize(); + int rc = cbmem_initialize(); #if CONFIG_CONSOLE_CBMEM cbmemc_reinit(); #endif @@ -142,11 +142,13 @@ void hardwaremain(int boot_complete)
timestamp_add_now(TS_LOAD_PAYLOAD);
+ printk(BIOS_DEBUG, "%s: finding payload\n", __func__); payload = cbfs_load_payload(CBFS_DEFAULT_MEDIA, CONFIG_CBFS_PREFIX "/payload"); if (! payload) die("Could not find a payload\n");
+ printk(BIOS_DEBUG, "%s: found payload, running selfboot\n", __func__); selfboot(lb_mem, payload); printk(BIOS_EMERG, "Boot failed"); } diff --git a/src/mainboard/google/snow/ramstage.c b/src/mainboard/google/snow/ramstage.c index f9d9c96..d280dbe 100644 --- a/src/mainboard/google/snow/ramstage.c +++ b/src/mainboard/google/snow/ramstage.c @@ -19,12 +19,21 @@
#include <console/console.h>
+#if CONFIG_WRITE_HIGH_TABLES +#include <cbmem.h> +#endif + +void hardwaremain(int boot_complete); void main(void) { -// volatile unsigned long *pshold = (unsigned long *)0x1004330c; -// *pshold &= ~0x100; /* shut down */ - console_init(); printk(BIOS_INFO, "hello from ramstage\n"); - while (1); + +#if CONFIG_WRITE_HIGH_TABLES + /* Leave some space for ACPI tables */ + high_tables_base = CONFIG_RAMBASE; + high_tables_size = CONFIG_RAMBASE + 0x100000; +#endif + + hardwaremain(0); }
-
David Hendricks