static void rpi_get_board_rev(void) { int ret; char *name; BCM2835_MBOX_STACK_ALIGN(struct msg_get_board_rev, msg); BCM2835_MBOX_INIT_HDR(msg); BCM2835_MBOX_INIT_TAG(&msg->get_board_rev, GET_BOARD_REV); ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr); if (ret) { printf("bcm2835: Could not query board revision\n"); /* Ignore error; not critical */ return; } /* Comments from u-boot: * For details of old-vs-new scheme, see: * https://github.com/pimoroni/RPi.version/blob/master/RPi/version.py * http://www.raspberrypi.org/forums/viewtopic.php?f=63&t=99293&p=690282 * (a few posts down) * * For the RPi 1, bit 24 is the "warranty bit", so we mask off just the * lower byte to use as the board rev: * http://www.raspberrypi.org/forums/viewtopic.php?f=63&t=98367&start=250 * http://www.raspberrypi.org/forums/viewtopic.php?f=31&t=20594 */ rpi_board_rev = msg->get_board_rev.body.resp.rev; if (rpi_board_rev & 0x800000) rpi_board_rev = (rpi_board_rev >> 4) & 0xff; else
int bcm2835_mailbox_set_power_state( bcm2835_set_power_state_entries *_entries ) { struct BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE { bcm2835_mbox_buf_hdr hdr; bcm2835_mbox_tag_power_state set_power_state; uint32_t end_tag; uint32_t padding_reserve[16]; } buffer; BCM2835_MBOX_INIT_BUF( &buffer ); BCM2835_MBOX_INIT_TAG( &buffer.set_power_state, BCM2835_MAILBOX_TAG_SET_POWER_STATE ); buffer.set_power_state.body.req.dev_id = _entries->dev_id; buffer.set_power_state.body.req.state = _entries->state; bcm2835_mailbox_buffer_flush_and_invalidate( &buffer, sizeof( buffer ) ); if ( bcm2835_mailbox_send_read_buffer( &buffer ) ) return -1; _entries->dev_id = buffer.set_power_state.body.resp.dev_id; _entries->state = buffer.set_power_state.body.resp.state; if ( !bcm2835_mailbox_buffer_suceeded( &buffer.hdr ) ) return -2; return 0; }
static struct clk *rpi_register_firmware_clock(u32 clock_id, const char *name) { BCM2835_MBOX_STACK_ALIGN(struct msg_get_clock_rate, msg); int ret; BCM2835_MBOX_INIT_HDR(msg); BCM2835_MBOX_INIT_TAG(&msg->get_clock_rate, GET_CLOCK_RATE); msg->get_clock_rate.body.req.clock_id = clock_id; ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr); if (ret) return ERR_PTR(ret); return clk_fixed(name, msg->get_clock_rate.body.resp.rate_hz); }
static int rpi_get_arm_mem(u32 *size) { BCM2835_MBOX_STACK_ALIGN(struct msg_get_arm_mem, msg); int ret; BCM2835_MBOX_INIT_HDR(msg); BCM2835_MBOX_INIT_TAG(&msg->get_arm_mem, GET_ARM_MEMORY); ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr); if (ret) return ret; *size = msg->get_arm_mem.body.resp.mem_size; return 0; }
void rpi_set_usbethaddr(void) { BCM2835_MBOX_STACK_ALIGN(struct msg_get_mac_address, msg); int ret; BCM2835_MBOX_INIT_HDR(msg); BCM2835_MBOX_INIT_TAG(&msg->get_mac_address, GET_MAC_ADDRESS); ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr); if (ret) { printf("bcm2835: Could not query MAC address\n"); /* Ignore error; not critical */ return; } eth_register_ethaddr(0, msg->get_mac_address.body.resp.mac); }
static int rpi_register_clkdev(u32 clock_id, const char *name) { BCM2835_MBOX_STACK_ALIGN(struct msg_get_clock_rate, msg); struct clk *clk; int ret; BCM2835_MBOX_INIT_HDR(msg); BCM2835_MBOX_INIT_TAG(&msg->get_clock_rate, GET_CLOCK_RATE); msg->get_clock_rate.body.req.clock_id = clock_id; ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr); if (ret) return ret; clk = clk_fixed(name, msg->get_clock_rate.body.resp.rate_hz); if (IS_ERR(clk)) return PTR_ERR(clk); if (!clk_register_clkdev(clk, NULL, name)) return -ENODEV; return 0; }
int bcm2835_mailbox_init_frame_buffer( bcm2835_init_frame_buffer_entries *_entries ) { struct BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE { bcm2835_mbox_buf_hdr hdr; bcm2835_mbox_tag_display_size set_display_size; bcm2835_mbox_tag_virtual_size set_virtual_size; bcm2835_mbox_tag_depth set_depth; bcm2835_mbox_tag_pixel_order set_pixel_order; bcm2835_mbox_tag_alpha_mode set_alpha_mode; bcm2835_mbox_tag_virtual_offset set_virtual_offset; bcm2835_mbox_tag_overscan set_overscan; bcm2835_mbox_tag_allocate_buffer allocate_buffer; bcm2835_mbox_tag_get_pitch get_pitch; uint32_t end_tag; uint32_t padding_reserve[16]; } buffer; BCM2835_MBOX_INIT_BUF( &buffer ); BCM2835_MBOX_INIT_TAG( &buffer.set_display_size, BCM2835_MAILBOX_TAG_SET_DISPLAY_SIZE ); buffer.set_display_size.body.req.width = _entries->xres; buffer.set_display_size.body.req.height = _entries->yres; BCM2835_MBOX_INIT_TAG( &buffer.set_virtual_size, BCM2835_MAILBOX_TAG_SET_VIRTUAL_SIZE ); buffer.set_virtual_size.body.req.vwidth = _entries->xvirt; buffer.set_virtual_size.body.req.vheight = _entries->yvirt; BCM2835_MBOX_INIT_TAG( &buffer.set_depth, BCM2835_MAILBOX_TAG_SET_DEPTH ); buffer.set_depth.body.req.depth = _entries->depth; BCM2835_MBOX_INIT_TAG( &buffer.set_pixel_order, BCM2835_MAILBOX_TAG_SET_PIXEL_ORDER ); buffer.set_pixel_order.body.req.pixel_order = _entries->pixel_order; BCM2835_MBOX_INIT_TAG( &buffer.set_alpha_mode, BCM2835_MAILBOX_TAG_SET_ALPHA_MODE ); buffer.set_alpha_mode.body.req.alpha_mode = _entries->alpha_mode; BCM2835_MBOX_INIT_TAG( &buffer.set_virtual_offset, BCM2835_MAILBOX_TAG_SET_VIRTUAL_OFFSET ); buffer.set_virtual_offset.body.req.voffset_x = _entries->voffset_x; buffer.set_virtual_offset.body.req.voffset_x = _entries->voffset_y; BCM2835_MBOX_INIT_TAG( &buffer.set_overscan, BCM2835_MAILBOX_TAG_SET_OVERSCAN ); buffer.set_overscan.body.req.overscan_top = _entries->overscan_top; buffer.set_overscan.body.req.overscan_bottom = _entries->overscan_bottom; buffer.set_overscan.body.req.overscan_left = _entries->overscan_left; buffer.set_overscan.body.req.overscan_right = _entries->overscan_right; BCM2835_MBOX_INIT_TAG( &buffer.allocate_buffer, BCM2835_MAILBOX_TAG_ALLOCATE_BUFFER ); buffer.allocate_buffer.body.req.align = 0x100; BCM2835_MBOX_INIT_TAG_NO_REQ( &buffer.get_pitch, BCM2835_MAILBOX_TAG_GET_PITCH ); bcm2835_mailbox_buffer_flush_and_invalidate( &buffer, sizeof( buffer ) ); if ( bcm2835_mailbox_send_read_buffer( &buffer ) ) return -1; _entries->xres = buffer.set_display_size.body.resp.width; _entries->yres = buffer.set_display_size.body.resp.height; _entries->xvirt = buffer.set_virtual_size.body.resp.vwidth; _entries->yvirt = buffer.set_virtual_size.body.resp.vheight; _entries->depth = buffer.set_depth.body.resp.depth; _entries->base = buffer.allocate_buffer.body.resp.base; _entries->base &= BCM2835_VC_MEMORY_MAPPING_MASK; _entries->size = buffer.allocate_buffer.body.resp.size; _entries->pixel_order = buffer.set_pixel_order.body.resp.pixel_order; _entries->alpha_mode = buffer.set_alpha_mode.body.resp.alpha_mode; _entries->voffset_x = buffer.set_virtual_offset.body.resp.voffset_x; _entries->voffset_y = buffer.set_virtual_offset.body.resp.voffset_y; _entries->overscan_left = buffer.set_overscan.body.resp.overscan_left; _entries->overscan_right = buffer.set_overscan.body.resp.overscan_right; _entries->overscan_top = buffer.set_overscan.body.resp.overscan_top; _entries->overscan_bottom = buffer.set_overscan.body.resp.overscan_bottom; if ( !bcm2835_mailbox_buffer_suceeded( &buffer.hdr ) ) return -2; if ( !BCM2835_MBOX_TAG_REPLY_IS_SET( &buffer.allocate_buffer ) ) return -3; if ( _entries->base < 0x100000 ) return -4; return 0; }