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bios/boot: make Ethernet boot mode flexible (now also using boot.json similarly to SDCard boot). 

Example of boot.json:
{
	"Image":        "0x40000000",
	"rootfs.cpio":  "0x40800000",
	"rv32.dtb":     "0x41000000",
	"emulator.bin": "0x41100000"
}
This commit is contained in:
Florent Kermarrec 2020-06-11 13:12:58 +02:00
parent c2ae22eeb6
commit f4abdd3f2c
1 changed files with 78 additions and 120 deletions
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194
litex/soc/software/bios/boot.c
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@ -241,23 +241,6 @@ int serialboot(void)
return 1; return 1;
} }
#if defined(CONFIG_CPU_VARIANT_LINUX)
#ifndef KERNEL_IMAGE_RAM_OFFSET
#define KERNEL_IMAGE_RAM_OFFSET 0x00000000
#endif
#ifndef ROOTFS_IMAGE_RAM_OFFSET
#define ROOTFS_IMAGE_RAM_OFFSET 0x00800000
#endif
#ifndef DEVICE_TREE_IMAGE_RAM_OFFSET
#define DEVICE_TREE_IMAGE_RAM_OFFSET 0x01000000
#endif
#ifndef EMULATOR_IMAGE_RAM_OFFSET
#define EMULATOR_IMAGE_RAM_OFFSET 0x01100000
#endif
#endif
#ifdef CSR_ETHMAC_BASE #ifdef CSR_ETHMAC_BASE
#ifndef LOCALIP1 #ifndef LOCALIP1
@ -274,138 +257,100 @@ int serialboot(void)
#define REMOTEIP4 100 #define REMOTEIP4 100
#endif #endif
#define DEFAULT_TFTP_SERVER_PORT 69 /* IANA well known port: UDP/69 */
#ifndef TFTP_SERVER_PORT #ifndef TFTP_SERVER_PORT
#define TFTP_SERVER_PORT DEFAULT_TFTP_SERVER_PORT #define TFTP_SERVER_PORT 69
#endif #endif
static int tftp_get_v(unsigned int ip, unsigned short server_port,
const char *filename, char *buffer)
{
int r;
r = tftp_get(ip, server_port, filename, buffer);
if(r > 0)
printf("Downloaded %d bytes from %s over TFTP to 0x%08x\n", r, filename, buffer);
else
printf("Unable to download %s over TFTP\n", filename);
return r;
}
static const unsigned char macadr[6] = {0x10, 0xe2, 0xd5, 0x00, 0x00, 0x00}; static const unsigned char macadr[6] = {0x10, 0xe2, 0xd5, 0x00, 0x00, 0x00};
#if defined(CONFIG_CPU_TYPE_MOR1KX) && defined(CONFIG_CPU_VARIANT_LINUX) static int copy_file_from_tftp_to_ram(unsigned int ip, unsigned short server_port,
static int try_get_kernel_rootfs_dtb(unsigned int ip, unsigned short tftp_port) const char *filename, char *buffer)
{ {
unsigned long tftp_dst_addr;
int size; int size;
printf("Copying %s to 0x%08x... ", filename, buffer);
tftp_dst_addr = MAIN_RAM_BASE + KERNEL_IMAGE_RAM_OFFSET; size = tftp_get(ip, server_port, filename, buffer);
size = tftp_get_v(ip, tftp_port, "Image", (void *)tftp_dst_addr); if(size > 0)
if (size <= 0) { printf("(%d bytes)", size);
printf("Network boot failed\n"); printf("\n");
return 0; return size;
} }
tftp_dst_addr = MAIN_RAM_BASE + DEVICE_TREE_IMAGE_RAM_OFFSET; static void netboot_from_json(const char * filename, unsigned int ip, unsigned short tftp_port)
size = tftp_get_v(ip, tftp_port, "mor1kx.dtb", (void *)tftp_dst_addr);
if(size <= 0) {
printf("No mor1kx.dtb found\n");
return 0;
}
tftp_dst_addr = MAIN_RAM_BASE + ROOTFS_IMAGE_RAM_OFFSET;
size = tftp_get_v(ip, tftp_port, "rootfs.cpio", (void *)tftp_dst_addr);
if(size <= 0) {
printf("No rootfs.cpio found (optional)\n");
}
return 1;
}
#endif
#if defined(CONFIG_CPU_TYPE_VEXRISCV) && defined(CONFIG_CPU_VARIANT_LINUX)
static int try_get_kernel_rootfs_dtb_emulator(unsigned int ip, unsigned short tftp_port)
{ {
unsigned long tftp_dst_addr;
int size; int size;
uint8_t i;
uint8_t count;
tftp_dst_addr = MAIN_RAM_BASE + KERNEL_IMAGE_RAM_OFFSET; /* FIXME: modify/increase if too limiting */
size = tftp_get_v(ip, tftp_port, "Image", (void *)tftp_dst_addr); char json_buffer[256];
if (size <= 0) { char image_filename[32];
printf("Network boot failed\n"); char image_address[32];
return 0; uint8_t image_found;
/* Read JSON file */
size = tftp_get(ip, tftp_port, filename, json_buffer);
if (size <= 0)
return;
/* Parse JSON file */
jsmntok_t t[16];
jsmn_parser p;
jsmn_init(&p);
image_found = 0;
count = jsmn_parse(&p, json_buffer, strlen(json_buffer), t, sizeof(t)/sizeof(*t));
for (i=0; i<count-1; i++) {
/* Images are JSON strings with 1 children */
if ((t[i].type == JSMN_STRING) && (t[i].size == 1)) {
/* Get Image filename */
memset(image_filename, 0, sizeof(image_filename));
memcpy(image_filename, json_buffer+t[i].start, t[i].end - t[i].start);
/* Get Image address */
memset(image_address, 0, sizeof(image_address));
memcpy(image_address, json_buffer+t[i+1].start, t[i+1].end - t[i+1].start);
/* Copy Image from Network to address */
size = copy_file_from_tftp_to_ram(ip, tftp_port, image_filename, (void *)strtoul(image_address, NULL, 0));
if (size <= 0)
return;
image_found = 1;
}
} }
tftp_dst_addr = MAIN_RAM_BASE + ROOTFS_IMAGE_RAM_OFFSET; /* Boot to last Image address */
size = tftp_get_v(ip, tftp_port, "rootfs.cpio", (void *)tftp_dst_addr); if (image_found)
if(size <= 0) { boot(0, 0, 0, strtoul(image_address, NULL, 0));
printf("No rootfs.cpio found\n");
return 0;
} }
tftp_dst_addr = MAIN_RAM_BASE + DEVICE_TREE_IMAGE_RAM_OFFSET; static void netboot_from_bin(const char * filename, unsigned int ip, unsigned short tftp_port)
size = tftp_get_v(ip, tftp_port, "rv32.dtb", (void *)tftp_dst_addr); {
if(size <= 0) { int size;
printf("No rv32.dtb found\n"); size = copy_file_from_tftp_to_ram(ip, tftp_port, filename, (void *)MAIN_RAM_BASE);
return 0; if (size <= 0)
return;
boot(0, 0, 0, MAIN_RAM_BASE);
} }
tftp_dst_addr = MAIN_RAM_BASE + EMULATOR_IMAGE_RAM_OFFSET;
size = tftp_get_v(ip, tftp_port, "emulator.bin", (void *)tftp_dst_addr);
if(size <= 0) {
printf("No emulator.bin found\n");
return 0;
}
return 1;
}
#endif
void netboot(void) void netboot(void)
{ {
int size;
unsigned int ip; unsigned int ip;
unsigned long tftp_dst_addr;
unsigned short tftp_port;
printf("Booting from network...\n"); printf("Booting from network...\n");
printf("Local IP : %d.%d.%d.%d\n", LOCALIP1, LOCALIP2, LOCALIP3, LOCALIP4); printf("Local IP : %d.%d.%d.%d\n", LOCALIP1, LOCALIP2, LOCALIP3, LOCALIP4);
printf("Remote IP: %d.%d.%d.%d\n", REMOTEIP1, REMOTEIP2, REMOTEIP3, REMOTEIP4); printf("Remote IP: %d.%d.%d.%d\n", REMOTEIP1, REMOTEIP2, REMOTEIP3, REMOTEIP4);
ip = IPTOINT(REMOTEIP1, REMOTEIP2, REMOTEIP3, REMOTEIP4); ip = IPTOINT(REMOTEIP1, REMOTEIP2, REMOTEIP3, REMOTEIP4);
udp_start(macadr, IPTOINT(LOCALIP1, LOCALIP2, LOCALIP3, LOCALIP4)); udp_start(macadr, IPTOINT(LOCALIP1, LOCALIP2, LOCALIP3, LOCALIP4));
tftp_port = TFTP_SERVER_PORT; /* Boot from boot.json */
printf("Fetching from: UDP/%d\n", tftp_port); printf("Booting from boot.json...\n");
netboot_from_json("boot.json", ip, TFTP_SERVER_PORT);
#if defined(CONFIG_CPU_TYPE_VEXRISCV) && defined(CONFIG_CPU_VARIANT_LINUX) /* Boot from boot.bin */
if(try_get_kernel_rootfs_dtb_emulator(ip, tftp_port)) printf("Booting from boot.bin...\n");
{ netboot_from_bin("boot.bin", ip, TFTP_SERVER_PORT);
boot(0, 0, 0, MAIN_RAM_BASE + EMULATOR_IMAGE_RAM_OFFSET);
return;
}
printf("Unable to download Linux images, falling back to boot.bin\n");
#endif
#if defined(CONFIG_CPU_TYPE_MOR1KX) && defined(CONFIG_CPU_VARIANT_LINUX) /* Boot failed if we are here... */
if(try_get_kernel_rootfs_dtb(ip, tftp_port)) printf("Network boot failed.\n");
{
boot(MAIN_RAM_BASE + DEVICE_TREE_IMAGE_RAM_OFFSET, 0, 0, MAIN_RAM_BASE);
return;
}
printf("Unable to download Linux images, falling back to boot.bin\n");
#endif
tftp_dst_addr = MAIN_RAM_BASE;
size = tftp_get_v(ip, tftp_port, "boot.bin", (void *)tftp_dst_addr);
if (size <= 0) {
printf("Network boot failed\n");
return;
}
boot(0, 0, 0, MAIN_RAM_BASE);
} }
#endif #endif
@ -472,6 +417,19 @@ static int copy_image_from_flash_to_ram(unsigned int flash_address, unsigned int
} }
#endif #endif
#ifndef KERNEL_IMAGE_RAM_OFFSET
#define KERNEL_IMAGE_RAM_OFFSET 0x00000000
#endif
#ifndef ROOTFS_IMAGE_RAM_OFFSET
#define ROOTFS_IMAGE_RAM_OFFSET 0x00800000
#endif
#ifndef DEVICE_TREE_IMAGE_RAM_OFFSET
#define DEVICE_TREE_IMAGE_RAM_OFFSET 0x01000000
#endif
#ifndef EMULATOR_IMAGE_RAM_OFFSET
#define EMULATOR_IMAGE_RAM_OFFSET 0x01100000
#endif
#ifndef KERNEL_IMAGE_FLASH_OFFSET #ifndef KERNEL_IMAGE_FLASH_OFFSET
#define KERNEL_IMAGE_FLASH_OFFSET 0x00000000 // 0MB #define KERNEL_IMAGE_FLASH_OFFSET 0x00000000 // 0MB
#endif #endif